Just my two cents:

As much as I like SFOS, I admit that clearly when/if they become as powerful as Google, they may/probably lose what I currently appreciate: transparency, relatively closed relationship with customers, a nice community, agility to adapt and evolve...etc...

BUT, I am living in the current time. What I see and what is really bad is when a company like Google is having close to a monopoly and can dictate whatever they like.
What can prevent a company from acting bad? Some regulation but more importantly, more competition.

I do like SFOS but I also much appreciate others that support other system (apart from the apple) because we need more alternative systems.

I think the current attack from the European Commission against Google is peanuts if there is no viable alternative.