I mainly agree, but does the numbers of blind people really justify it economic wise? I allmost see accessibility as charity. I want to add it to my apps, main

I mainly agree, but does the numbers of blind people really justify it economic wise? I allmost see accessibility as charity. I want to add it to my apps, mainly because it is not nice to ignore people needs(and who know, with bad luck I might end up in that group one day), but not because I expect great monetary returns.