Does their preponderance in the marketplace make it more difficult to avoid? No doubt. But have you ever tried to appeal a procedure of a calcified administration?
I.e., Facebook doesn't have to care that you send emails and make phone calls instead of Facebook messages, because your individual contribution to their income is negligible, and, I suppose, you don't represent a pervasive or effective force in their target demographics.
What parent's effect change? You were the first to use that expression in this thread.
will not damage the market position of the service they were banned from or left.
We weren't talking about their market position, but whether customers had recourse, and I said they have in the form of competing services.
But if we're going to discuss the effects that an individual can have in changing overall practices of an organization, I'm not sure if public institutions will come out very well in the picture.
I'm sure that's what MySpace thought during their heyday.