I'll start. Several years back I was working as a service provider for the second biggest internet service provider in my city. This company paid a second, smaller company to provide on site tech support to the the customers of our Isp. I was basically a wandering IT guy
It was going well till the Isp switched companies and they contacted me to continue employment under them. I got paid by the number of appointments completed and the number of appointments started falling drastically. On top of that, they started to just take their sweet damn time sending my money, and trying underpay me. I quickly lost patience.
So one day I quit providing service. I didn't bother to tell them tho. So for a week or so there were no appointments fulfilled in the whole city. That's right, I was the only guy in the whole city providing support and this guys still fucked around.
Anyhow, they didn't notice till someone complained. By this time I was enjoying my week, living from my side gig fixing computers. They called me to call me unprofessional.
Anyhow, turns out this situation where the company dependent on itinerant IT guys that went unpaid was a country wide thing, their workforce quit faster than they could get them back in and they lost their contract with the ISP, then went under.