I'm sure companies have used MAME when they released there arcade collections. For example, there was a arcade compilation released with the MK games. I think it was for the PS2, but I'll have to double check. Anyway, at the time, MAME's emulation of the MK games wasn't perfect, and the characters shadows were either absent, or just would flicker in and out depending what screen you were on. There were other small bugs in the emulation as well. Sure enough, those exact same bugs were in the compilation that was officially released by Midway. I couldn't believe that they basically just stole MAME's source & used it for there own compilation, then sold it to the masses
Windows 11 64 bit OS
Intel Core i7-10700
Nvidia GeForce RTX 2060 6GB
32GB DDR4 RAM