Yea you mean archives, another one of the industry norms? Wouldn’t necessarily call them compressions as the size difference is sometimes insignificant, but I seem to be missing your entire point, what is it? What are game devs doing wrong?
Lack of compression. Hence huge game sizes. Lack of optimization as well.
We already went through compression, that is not the issue as basically every game is already compressed.
Optimization, as I understand usually regards the coding/scripting part of things. That has arguably 0 effect on filesizes.
So tell me, what are game devs doing so wrong they accidentally or through sheer laziness added 100s of gbs of useless data?
Have you ever made a game? Or worked with engine? Wrote code…etc.? I’d hazard a guess no because optimization is not “coding scripting thing”.
Here educate yourself an learn a bit about asset consolidation.
And stop asking stupid questions about “what are developers doing wrong”. Unless I have their source code, I can’t tell, can I? But game size definitely grows by poor optimization which you don’t realize goes beyond including middleware and copy pasting code. From image compression to audio, etc. Never though I’d have to explain that MP3 is smaller than WAV file and that constitutes optimizing an asset, but here I am.