Practically speaking, even if you did pay for free services, I'd expect the data to be monetized. You pay your ISP, yet there's tons of data being sold, for example. When it's free, at least you don't pay twice.
You always pay once with your data. You might pay twice with actual cash. There's no way to prevent the former, even if the latter occurs because they aren't mutually exclusive.
You always pay once with your data. You might pay twice with actual cash. There's no way to prevent the former, even if the latter occurs because they aren't mutually exclusive.