> Is it wrong to require people to use certain tools?

As the state or a representative thereof, yes; that's why public service is either run by itself or contracts to operators who must then abide by requirements (like no discrimination, unconditional access to information, social pricing, or similar provisions depending on your jurisdiction), that they would scrape the very day their activity became free market.

In France, even banks, a sector without a public actor in most countries, are legally required to open accounts ("droit au compte"). I don't mean _any_ kind of account, but at least one. On which banks naturally don't make a profit...

Google or Apple on the other hand, have no legal duty to let you in, which means in practice that they can lock you out of public services that they gate access to.

BTW: overthinking is how society moves forward :)