I joined the 777 Customer Engineering organization shortly after Boeing launched the program in 1995, so my perspective isn't necessarily current ... but I will suggest that passengers' feelings about cabin accommodations absolutely do NOT matter to Boeing (nor, presumably, to every other major airframer) in terms of influencing design decisions

Boeing Commercial provides the interfaces (structural attach points. power, air, water, etc) for pretty much everything in the cabin as part of the airframe; all the passenger-facing items -- seats, galleys, lavs, overhead bins, passenger service units (containing vents, lights, call buttons, etc), closets, IFE, and the like -- are buyer-furnished equipment

Boeing Commercial makes money from their customers -- principally airlines and leasing companies -- thus only indirectly from the paying passengers