Let's see... my three hikvisions might need a reset once in awhile, and I lost one to lightning EMF surge. So I keep a spare. The three logitechs have hummed along fine for about 4 years now, but need to have some maintenances on them this year... good cleaning, etc. may have to replace one. Mine are only concerned with making stills and low fps streaming to my website... danged if I'm gonna let my hard work display free an a commercial website, never knowing if issue is mine or (most likely) theirs.... so I upload to Me... you can see 'em if you want, live, or within 10 seconds of snap, at 1024x576.
Fact is, most of us who don't try to supply other services, (other than incidentally, or as '2nd source') are able to maintain ours with little or no issues generally, once we've gone to the trouble and taken the necessary steps to accomplish what we desire...