You literally just proved my point.
It wasn't profitable. And it was free. It killed competition by losing money.
And now, by your concession, they are turning it into a business.
That's a fundamental change in the service. Fuck that. Either it was always their intent, in which case they were lying scum the whole time. Or it wasn't their intent and they've just decided spontaneously to prioritize profit, in which case it's greed and betrayal.
Either way, fuck 'em.