I mean, the repair cost will kill alotta riders. When you got some shit bike for 200 bucks and it's sat for 3 years and now it needs new tires cables and tuneup for over 100, you just toss it to the curb and buy a new one.
In atl I started a co-op at GA Tech reclaiming abandoned bikes on campus. It eventually expanded to include apartmentbuildings and even Marta (the rail/bus system) donating wasted bikes. Unfortunately Marta actually preferred to scrap them than donate them cuz they'd get some tiny few bucks back
We'd offer tools parts and help to fix the bikes for cheap. Basically we had a "cage" full of bikes in varying states of repair, they'd start in price usually around 1/4 to half the "new" cost. Then each repair was a deduction. If you did the repairs (with our tools parts and help) you got the deduction, or we could ifx it for you and you pay full price. So like, 250 bike, starting at 100, needs tires (-10 ea) needs cables (-5), derailleur replaced and tuned etc and if you did the work you learn something and got a good bike for 50 bucks. Many wound up being free (FIYFI - free if you fix it)
all profits went to buying new tools stands and parts to be able to help people repair their bikes. Or the real trash ones got stripped for commonly needed parts.
We had the best tools. I was the mechanical chair and my rule was if a bike needed a tool we didn't have, we'd buy the tool. I mean we spent hundreds on bottom bracket threaders to save $75 Walmart mountainbikes so we could give them away. but it was soooo worth it. I'm proud it's still going on and serving atl. We also offered parts at cost if people needed them.
Anyway, I still like to fix up bikes. very satisfying especially when you can offer it to someone who appreciates it. I spent weeks at one point on this really neat Raleigh mountain bike, it was all built out top of the line early 90s - appropriate era stuff, full classic XT groupset, it wasn't expensive but it was the culmination of a buncha parts i'd saved and salvaged toward something I really liked and very classic. I gave it to this lady who'd been commuting 7 miles on a full suspension huffy to work. She loved that bike, we set her up a cart on it for groceries, and she'd come by sometimes we'd make or get dinner for the volunteers. Even got her kid a bike and into fixing bikes (she was like 4, but had fun)
Really made me pretty furious with the shit state of "minimum wage" but that's a whole other story. That lady worked harder to get to work than most do at work.