Videogames MUST deliver performance That's not true in the way that I think you're using video games as an example. Video games must be fun, being fun requires

Videogames MUST deliver performance That's not true in the way that I think you're using video games as an example. Video games must be fun, being fun requires being performant enough, and for graphically demanding games that requires lots of optimizing. But there are tons of games that are not graphically demanding.