Although it's sad to see backward compatibility getting axed in newer consoles, it does come at a heavy cost [1]. It may make sense for OS like Windows/OSX, but personally I think I would rather have an all-new console without all the baggage, which may or may not add value during the lifetime of the console.

In fact, with most consoles having a lifespan of about 6 years on average [2], I would even say that there is a diminishing return in keeping that baggage around.

[1] https://en.wikipedia.org/wiki/Backward_compatibility#Costs

[2] https://za.ign.com/ps4/64636/feature/the-5-longest-console-l...