[markhnthoraway]

I do think training developers and designers on accessibility is a core part of having them ship professional quality work. Even if product people and designers aren't thinking about it, I think it's reasonable to expect competent front-end developers to understand how to implement designs to some professional standard that doesn't make the page unusable for people with disabilities and expose the company to lawsuits.

On the other hand I don't think the business really knows/cares what HTML you use, they just can reasonably trust people to implement stuff in the "right" way, which 90% of time is identify the correct HTML to represent the nature and structure of the design and build out from there. You'd expect things to "just work" when you are paying for front-end specialists.