[toast0]

Or they could charge you a simple price for the version for Mac OS 2020, and when Apple breaks it next year, you can buy the version for Mac OS 2021.

[imposterr]

Try explaining that to customers who paid for the software and don't understand why they have to pay again.

[reaperducer]

Tell them that's how it was done for decades and decades?

Plenty of successful software companies sell their software, instead of renting it.

Moreover, the billion dollar company I work for will not buy any software that requires a subscription, unless it's from Microsoft, Adobe, or another big name. If a program from Rando Joe's Softworks requires a subscription, the company will tell the employee to find another solution.