Earlier quoted context omitted.
Making an excellent product is hard, but what is really hard, is maintaining it for years and decades afterwards. Maintenance, addition of new functionality, bugfixing, porting to other platforms etc. takes easily 10x-50x time than the initial release, and eats the vast majority of the developers' time and energy. This is where "not being paid for your work" translates into abandoned projects.
Plenty of people are using copies of Word, Powerpoint, and Excel 2003 just fine, which received literally zero 'maintenance' for at least a decade or more depending on personal preferences. For most software that can be sold in a box, without an attached cloud service, this approach works. EDIT: Also some fraction would be using them on computers that literally haven't been upgraded or connected to the internet for a…
Unless they're also using computers and OSes from 2003 (spoiler -- they're not because those OSes wouldn't work with today's internet), those people are benefiting from untold efforts in the meantime to maintain their OS so it has that compatibility with 20 year old user space code.