Sure they do, but all of the alternatives are not nearly as convenient. But you can absolutely get by without an iPhone or Android phone with Play services.
Effectively, for most people, they don't.
Most people make a new phone purchase impulsively when involved with negotiating a phone plan at a store or in a rush after they break their old phone and need a new one for life and work almost immediately, the cost benefit analysis for most people simply doesn't make sense unless they are naturally interested in tech as a hobby or it is related to their career (or are surrounded by friendly people who are).
It feels like making a car for an international market that is meant for anybody but is locked into one language in the user interface for no good reason and either can't be changed without overhauling a big part of the car construction process involving somehow parts of the actual powertrain needing to be changed or it is only a moderately difficult process to begin and they haven't prioritized it which makes me wonder how they establish priorities for creating a car that is useful to as much of the world as possible in the first place...
I mean I am thankful for useful FOSS software, and having ANY alternative to microsoft office, especially a functional free option is amazing.... it is just... come on LibreOffice!!!!!
Let a cottage community of weird LibreOffice keybinding schemes flourish!!!