That's what the stairs are for, pets who are elderly and arthritic.
One of my dogs went blind years before she passed. Most of the time, she'd jump up on the bed effortlessly. Every once in a while, though, she'd misjudge and thunk against the bed. She'd make it on her second attempt.
Our other dog was arthritic, but large enough so that getting on the couch was easy for her. If she had been a small dog, we would have had to get stairs. Alex spent all of her time in comfort on the couch. It was funny, she never once got on the furniture until we got the little dog, who happily jumped up on everything. Alex seemed to think that crossed some kind of a line. It was all right if the cats got on the furniture, because they were cats. But if that damned little dog was going to get on the couch, well then. She was, too. That made the last years of her life very comfortable. I can still picture her laying there, first thing in the morning, when I'd say "want to go out?" She'd just stare at me. I could almost see the thought bubble. "Are you out of your mind? It's cold and dark out there. I'll wait until the sun comes up and it warms up a bit, thank you very much."
To answer your question, though, Dravyk...you are definitely missing a group of folks to fleec...er...sell things to. People who own pets are a bubble off center and will buy pretty much anything for them...as a fast trip through Petco will prove.
My little Dingo is currently wearing the burgundy sweater she got for Yule. Give ya a clue?