If you really are arguing that the rent seeking subscription model is justified by customer support, I would point out that the vast majority of consumer software, be it mobile or desktop barely requires support. The people that got me into this subject were the good folks over at 1Password, they too claim that they can offer better support given a subscription, but you have to ask yourself how many of their customers actually need real support to use their password manager?
Most people google if they need to know how to do something, tech support is only ever a last resort and only a very small footprint of users actually need it at any time unless your software is fiendishly complex.
When was the last time you needed support from Microsoft to play an Xbox game, or from the people behind Tinder to date, or from Dropbox to synch files, or from Slack to setup a new channel?
Some users will always need support, but the vast majority are good with youtube, google and your help articles, so lets not pretend that inflicting neverending payments on the many is a solution for the few.
