It isn't a very good comparison given that those thermostats/locks aren't free and it's unlikely Google wouldn't like someone because of how they are using their thermostat. In this case, twitter provides the account and the objections are to how the account is being used.

Just because Twitter doesn't debit your bank account doesn't mean their service is free. They're selling you to any buyer who's willing to pay, and it's a lot of buyers.

Just because these companies engage in fancy accounting doesn't mean we aren't consumers in a traditional sense and doesn't mean we waive rights consumers typically are given.

If they were just a thermostat company, then yeah. They could say “we don’t provide climate control services to the GOP”, or whatever. (Contact law covers how to handle refunds for devices already purchased, etc. I’m talking about the core issue of companies being able to choose their customers)

But, because they have a monopoly in search, they can abuse it to dictate terms in other sectors. That’s what I have a problem with.

It’s also a story we’ve seen recently, where some poor user gets their Google Cloud acct locked, and loses their YouTube videos as a result. Those stories are what convinced me that Google needs to be chopped up.

I wouldn't be surprised if they already block access to nest.com or related APIs for users either residing in, or with an IP locating them in a US-sanctioned country.

I'd not hold it against them if the government were forcing their hand.