All the time. When I first got into the hobby I only had room for 2 machines, and I wanted to play EVERYTHING, so I would buy, play, and let go.
I think actually everything in my gameroom now is my second example.
With a few exceptions..
Paragon...I've had 4, but i finally found one with a nice cabinet and I've got a NOS restored PF ready to swap.
RFM...I can't even remember...at least 4 of them? But finally found a HUO one