I bought what I thought was a commercial upright exercise bike about 10 years ago. It was a Life Fitness brand which is a popular brand in gyms, and my dad had one for well over a decade at that point with no issues. Well, either their QC went WAY downhill or I ended up with a residential version (although I specifically requested a commercial version from a licensed Life Fitness dealer). I had the tensioner go out on that thing at least 3 times, the frame broke once, and I went through about a bazillion foot straps before I just replaced the pedals with toe-clip pedals from a road bike. The last time the tensioner went out, they told me the bike was out of warranty and it would be $300+ for a new one. I told them where they could shove it, and scrapped that bike.
I bought a much cheaper, obviously residential Sole Fitness bike, and I've already had the tensioner go out on it once. But I can buy 3 of these bikes for what I paid for that Life Fitness model.