@openwebfriend@procial.tchncs.de

If you mean it will cost money to maintain computer infrastructure, I think they have scaling of data centers sorted out. At the scale they work at, I don't think it's going to be much of an issue.

If you mean in terms of customer support, I figure they will have some pretty big labels saying they aren't responsible for what's coming in from Fediverse.

Come to think of it, nailing down those labels might be what is taking them a little extra time before they federate, figuring out the best way to disclaim responsibility for what we are all saying over here.