Ocean isn't milking. He isn't a bad dev by any means, he is actually pretty good.
But his project management skills are poor. One of the most basic things professionals do, whether they're writers or movie directors or video game developers is to cut things down. That's what drafts are for. You take what you want to do, and transform that into what you can do. While making everything better in the process.
Do either of these games
need to be 30 chapters long? I highly doubt it.
The music and cinematics and whatever else are side-issues. The biggest issue is the shear scale of the games. He is currently doing half a chapter every 6-9 months so or. Completing these games, or even getting to the halfway point, is pretty much impossible at this pace unless he plans to do this for literal decades.
I've saw others, mainly in the SG thread, talk about if Ocean gets more money he can hire helpers and get better equipment. The issues I have with this is...
1 - If he has enough money to spend all this money on licensed music, he has enough money to hire helpers. This is poor money management. Spending thousands on music is a bad idea when he has more important things to spend money on.
2 - The pace of updates will eventually cause his support to plateau. Whatever new support he gains with a new update, will slowly go back down over the months to it's pre-update levels or it will not be a big enough increase to really result in significantly more funds.
3 - He already has spent a ton of money on his system(s). I talked about this last year, I don't think his system matters. He'll just do more renders, cinematics, animations etc. That doesn't lead to quicker updates, just bigger updates.
Expanding on #2. This has already happened for this game. The level of support now is the same as it was 1 year ago and only modestly higher than it was 2 years ago. He has lost about 100 patrons over the past 6 months, this pretty much cancels out gains made by SG.
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And for SG. Even after the latest release, he only has around 60 more Patrons than he did in December (going off the late May numbers, as not to use the start of month drop)
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SG and WIAB are pretty much sabotaging each other.