In the past, games were developed with specific hardware in mind. They didn’t really think of how their game would run on modern PCs 25+ years later. Some games even used that as a feature, famously, Space Invaders devs noticed that the game started speeding up as players destroyed more of the enemies because it didn’t have to render them and so it made the game harder as you progressed which was more fun!

By the way, there are ways to run retro games with speed limiters, you’ve just got to look into it more.