The N64 lost its console generation and solidified Sony as the market leader, in part because it used cartridges while everyone else used CD-ROMs. Way to choose

The N64 lost its console generation and solidified Sony as the market leader, in part because it used cartridges while everyone else used CD-ROMs. Way to choose an example that disproves the very point you were trying to make. Yes, I realize that. But the point was that poor decision was not enough to kill it, and the N64 was still a commercial success. A lot of gamers even preferred cartridges back then because of they didn't require load time. As for load times today, most modern games are implemented as scripts and assets for one of the big engines, usually Unreal or Unity. It's hard enough to manage all the assets that go into a modern game; an optimized loader would just make wrangling them all even more difficult. That's not a real reason to not optimize.