That's such a nonsensical analogy to get your point across, you could've just said that Patreon is donation based and not a business where you get something whenever you pay for it.
Fair enough you got a point, the thing is a lot of developers would entirely be capable of releasing their games once a month. Some people want that, and a few devs actually do that. If most devs really wanted to do it that way it could be done.
Rigid 30 day releases across the board on every game!
You know what would happen if that was the norm in adult gaming and all developers had that standard?
Tiny baby updates... Less overall content. The time to upload takes time. The time to stop and put it all together takes times. The time spent dealing with players takes time. Usually you do that for a few days after a release.
The players would also then have to make more frequent big downloads. Say the game goes up from 3GB to 3.3 GB over the month. That's another big download that month. Then the 3.6 the next month, and the 3.9 the following and so on. More overall downloaded content with less overall content.
Then people would start complaining... "There was only like 5 or 10 minutes of new content!"
Another thing something like that leads to is incomplete scenes, and less time for testing so more errors. Say you want to add a couple of days for testing before a release to try to get all the bugs.
On top of that it messes up patreon benefits a bit. Suppose you get something after X days then next tier gets it after X days and so on. With shorter release frames it makes the benefits smaller.
Plus it would definitely increase the workload of all the uploaders and mods adding games if every dev releases every month. Imagine 100+ games coming out on a single day... How would they even handle that? Then tomorrow is 100+ too... and so on. Total flood of games with micro updates.
Then devs would start whining, "My game was only on latest updates for 3 hours... wtf?"
Things are the way they are for a reason. Logistics!