Do all the reasons for avoiding Windows apply to Mac OS?
It’s quite common for Mac users to believe they are exempt from restrictions associated with Windows. Unfortunately such is not the case. Mac OSX does have some low-level components which are free software; and Apple puts less energy into customer lock-in (with some notable efforts such as BootCamp). However, the end-user is still fundamentally restricted — because of the proprietary license, he/she cannot use Mac OSX for all purposes, nor copy, study, modify, or redistribute it. Happily, because these freedoms matter a lot, it’s possible to run popular GNU/Linux distributions (such as Ubuntu) on Mac computers.