One company was honest about what their platform allows and disallows. You might not like how they choose to run it, but they did what they said.
Another company made claims about their platform (both to end users and to business partners) being "open" and then acted directly counter to those claims, in efforts to prevent competition.
Another company made claims about their platform (both to end users and to business partners) being "open" and then acted directly counter to those claims, in efforts to prevent competition.