How would companies deal with physical accessibility for online competitive games?

Let's say some disabled person wish to play a competitive game such as CS2 or COD.

How would companies include these people to have a fair experience?

While some improvements could be made such as strong aim assistance, it'd also break the competitiveness aspect of the game for non-disabled people. Such feature would also be obviously abused. So it'd require a level of verification like an official medical report to unlock it.

Of course one option would be to delegate the accessibility to whoever is organizing a competition, but I'm talking about online games.

My point is, how could something be implemented to provide a fair experience for disabled people on online competitive games? And why no company has ever implemented something like that? At least, I've never heard of something like that.

It just occurred me out of sudden while I was playing Counter Strike, I'm not a disabled person, but while there's a lot of real life sports with exclusive rules made for those people, I don't see online e-sports following up.