Keeping in mind that most of us here are atypical......
I'm going to estimate that less than 20% of the TYPICAL of MacOS users are actually performing ANY backups at all! For those in my experience who come from the Windows world to the MacOS (most of them grudgingly), the Time Machine function is often not even recognized as an option!
....and for those long-time MacOS users who know about Time Machine, I'm going to estimate that only 50% are actually using it!
As to buying a third-party backup solution....I would estimate that less than 25% of ALL MacOS users who backup regularly fall into this category.
Color me a pessimist if you like..... | 
