Who says I don't pay for games? In fact the only VNs I will rant and criticise the most are the ones I pay for. This is how I know about the dev more and talk to other patrons, SS members. When devs can answer messages, comments, make posts and do all kinds of other things at anytime every day, so quickly. Its fairly obvious they are doing this full time. I guess you're one of those naive people who believe everything a dev tells you blindly. You sound like you have no idea how these work. That making a game is so time consuming that you have no time left for anything else. Also when you include the interaction needed for your supporters too. Yes there are some devs that do this part time but that is easy to spot by the game update times themselves and how short they are. If a dev is making a 3d rendered game of higher standard with consistent updates. 95 % of the time they are doing this full time. Thats not hard to understand. BTW you can make a VN for free with all the best assets. It doesn't cost a dime if you know where to get everything from. So no a dev doesn't need to invest anything to get their money back its just profit.
Your first part about the money and incentive make no sense. Where is the motivation and urgency to work to a deadline, where is the consequences if they are late? There isn't any. Thats the problem. So they all end up taking advantage of it.
First of all, "the only VNs I will rant and criticise the most" makes no sense. Do you mean the only VNs you criticize, or the VNs you criticize the most? But whatever, you can say you support them and I can never know if you truly do or not. I'm not going to pretend I know when I don't.
I write games on the side and work a full time job. I care about my games and I like to see what people are saying about them, so even though I am at my regular job working, I check into my game-related accounts often and engage whenever I feel like it (I don't work at McDonalds, I work at a computer, so looking at my game accounts and responding at my whim isn't hard). So at least for me, answering messages at any time of day does not mean I'm doing it full time. But even so, how many devs are doing as you say? Answering messages, and doing "all kinds of things" at anytime of day? What kinds of things? You said in your first post that 95% of devs are doing it full time. I think that is not true. Are you saying 95% of devs are doing "all kinds of things at anytime of day," proving they are doing it full time? Are you saying that you keep track of all kings of things 95% of developers do, so that you can confidently say from your surveillance that they are doing it full time? Does that still seem like a good argument to you?
I'm not naïve. And sometimes I read a devs post about their computer dying, or a health issue, or some disaster, and I don't believe it. I will never know if it is true or not, but so many devs post these kinds of sob stories so often that you can't believe them all. So no, I don't usually believe it, but I forgive it because I know that it's hard to get up the motivation to get home from your real job and then put in time on your side job that is not yet making you enough money to make the effort worth it. You want to do it with the hope it will eventually make enough to be worth it, but without a guarantee, it's hard. So maybe you have like 100 patreons and are making 500 a month, but working 50 extra hours a month on top of your regular 120-hour a month job. That's 10 bucks an hour, and that is shit for the level of effort you are putting in. Then you login to F95zone to see if there has been some positive comments that will help you be optimistic that your work will eventually pay off, but it's just a bunch of sexually-frustrated trolls pissing all over your work. So that doesn't really help your motivation either. So you don't get as much work done as you like, and the end of the month comes and you worry that your subscribers are going to do down instead of up (which is absolutely a major consequence, and it's ridiculous to assert otherwise). So you make a last ditch effort to prevent that from happening by posting an excuse. Yeah, it's just an excuse, but isn't it understandable? And shouldn't we understand that their lack of motivation is partly our fault, for not paying them, and for constantly bitching about them and criticizing their work? You say I "sound" like I have no idea how these work. You are wrong. I know exactly how they work. You are fooling yourself due to a simple psychological phenomenon called cognitive dissonance. Weak-minded people are particularly susceptible to it. I am not.
Lastly: "BTW you can make a VN for free with all the best assets. It doesn't cost a dime if you know where to get everything from" I wrote "high quality game", not just any VN. The kind of game that doesn't get torn to shreds in these forums for using the same models, locations and clothing that appear so often in other VNs... Haven't you read that criticism here dozens of times? I have. But if you think you can do it, please do. Prove me wrong, and I'll subscribe to your game for 10 bucks a month for the next 10 years. I mean, if you "know how these work" and there is so much easy money to be made, why not go for it?