D&D 5E Are ability score caps adjusted by racial modifiers, or does every race have the same potential?

[Kaylos]

An easy solution for humans, whether you allow beyond 20 or cap at 18, would be to allow humans to pick 1 of their bonus stats and allow that one stat to be raised to 20 or 22 depending on which style you use.

 

[Mercurius]

Any reason you wrote especially 5E?

While you can house rule in all editions of D&D, 5E seems especially conducive to it.

 

[Cedric]

While you can house rule in all editions of D&D, 5E seems especially conducive to it.

Okay. I wasn't sure if that's what you meant, or if there was just some special caveat of 5th edition rules that encouraged house rules.