They are technically correct in that it’s the developers fault that they tied themselves to a proprietary game engine.
In the other hand Godot was nowhere near mature when the slay the spire devs most likely started development. They would be dumb if they used unity for their next game 🤷
I’d guess that companies that failed to turn profit when money was cheap are most likely doomed. However not all of the hype companies are like that. Some could be barely profitable, but shareholder pressure might push them to heavier monetization practices.
After watching the video the main thought I have in my mind is that the whole issue could have been subverted by building two sets of executables. One with DRM and one without. The DRM free version could then be stored for potential future use. That way you wouldn’t have to necessarily maintain the build environment.
Obviously this wouldn’t have occurred to me if I was building the game, but I hope the companies learned as soon as they ran across the issue the first time.