I once had an abled student who was one of the privileged few invited to plan a symposium tell me they hadn't made it accessible because "it's too expensive".
I asked them which planning meeting was the first meeting where they investigated costs for accessibility.
It turns out, of course, they hadn't investigated it or discussed it at all. It is something abled ppl are trained to do - think of it as "extra" cost and redirect that budget elsewhere. Like catered lunches at the symposium.