re: His point
Except that Sony are a private corporation, not a government run agency, and should be free to write games in any way they chose, catering for whatever markets they chose.
So no, he doesn't have a point at all, especially after adding that he's losing his income because he can't sell Sony's imaginary content for real money.
This is hardly the same thing as providing disabled access to buildings or discriminating against disabled job applicants.
Like every other group, if the blind or visually impaired want to persuade a private company to cater to them, they need to offer an incentive to do so, usually by making them understand that by ignoring people like themselves the private company is losing potential revenue.
If you're going to do this what's next? Sue Premier League football teams because they won't provide live commentary in the stadium at every seat? Perhaps we should put every business into bankruptcy by forcing them to cater for every eventuality and every individual, regardless of cost. We don't want businesses to be viable anymore, we just want them to be nice to everyone.
If Sony refuse to cater towards the blind and visually impaired, people have every right to say so and generate all the negative publicity they please. But what they shouldn't be allowed to do is force every private business to cater for every individual, because we live in the real world where producing 1000 types of scissors or 1000 types of football means people that aren't morons complaining about not being able to sell virtual goods for money will lose their jobs.