If they genuinely have a lower performance, they will sell their services at a price matching their performance and have no problem finding clients.

However, I dispute that premise. You are jumping to conclusions. The "disabled and English learners" I have met offer tremendous value, in different axes.

Someone who is blind is used to processing audio at several time the speed a non blind person can. So if I need someone to summarize and extra data from audio, I want someone who's blind. Because they will be more efficient than you or I.

I don't know about you, but I assume you are not blind. If you want to sell me your services, I'll pay you a fraction of what I'll pay a blind contractor because they will be more efficient than you.

Someone for which English is not their first language often uses a lower number of words, and makes simpler sentences. This is a godsent for technical documentation.

I fear you inner bias make you consider that as "intial disadvantage". It is extremely short sighted.

Feel free to call me prejudiced when I prefer blind and ESL hires.