> they could've addressed it directly by imposing limits/quotas
For one, they've already done this to an extent. For two, they're also doing this by deciding what projects are and are not welcome on their service in the first place.
If 9 people eat an apple or two a day but a tenth person wants to eat 100 apples a day, we don't have to set some apple limit. We can tell the tenth person to pound sand and keep giving everyone else the apples they want.
For one, they've already done this to an extent. For two, they're also doing this by deciding what projects are and are not welcome on their service in the first place.
If 9 people eat an apple or two a day but a tenth person wants to eat 100 apples a day, we don't have to set some apple limit. We can tell the tenth person to pound sand and keep giving everyone else the apples they want.