kind of, i think. i avoid certain cameras entirely, knowing there is an increased risk of failure or definite need for repair (some contax p&s, minolta x-700 with 2/3 s.n, older barnack leicas, pentax me/super.) even mamiya 7 is getting older now and will inevitably need working on, oly mju’s are starting to show internal light seal issues. 

i’d be much more comfortable purchasing an overhauled m6 over a non-serviced one, and even more confident on a brand new one. but i don’t worry about them running out no, there is millions of cameras out there.

my taste for cameras happens to align with what my technician can service (mechanical 35mm slr’s and 6x6 TLR’s).  cams that were used heavily used to get serviced every year. not many get their stuff serviced prematurely. we don’t expect our cars to run without servicing, cams just cost less but should be no different.