My personal test for whether an open source company encourages self-hosting is whether any plans/pricing page advertises "Self hosting" in a parallel/equal way to how they advertise commercial offerings.
Just like there exist companies who sell clothes not made in slave-like conditions even if they could legally get away with it and make more money by doing so.
Believe me, if consumers were not aware and the law not enforced, there would be (are ?) companies making clothes in slave-like conditions.