As far as I'm aware, any series created through the Incubator program Tapas owns a sizable percentage of it (up to negotiation though obviously between each individual incubator creator). I don't know if they'll own it indefinitely or if after a number of years all rights will revert to the creator, but I imagine they'd want a say in the creation of any physical media to sell.
And per the fiasco with the ToS, Tapas only wanted to offer bargaining rights for their creators when pitching to other companies.
But feel free to clarify @STAFF, if I got any of this wrong.