I don't see how that bit would be a problem. The market size, yes, it's a problem, but it's supposed to be a cloud service, there is no loss on the clients being open source.
yes there's a loss, not a monetary/economic loss, but a loss of (potential) power. the fact the loss is "potential" irks me about calling it a 'loss'; it's not quite a loss, but a missed opportunity to leverage more power over.
I don't see how that bit would be a problem. The market size, yes, it's a problem, but it's supposed to be a cloud service, there is no loss on the clients being open source.