Is "accessibility" a major concern for developers? Should it be? Did anybody ever stop to ask the masses of developers what they thought about it? And can anyb

Is "accessibility" a major concern for developers? Should it be? Did anybody ever stop to ask the masses of developers what they thought about it? And can anybody quote me the actual facts and figures around the oft-touted "need" for "accessibility"? Because I know it's supposed to be an important concern. But it isn't a concern, in fact, for anyone I know in the business.