To counter the point about losses, whilst no rugby is being played the overheads will be lower. Add in the furlough scheme and there is at least some offset to the reduced income.
I understand in football,only a small portion of their income is from ticket money. The majority is from TV, sponsorship and merchandise.
I'm not suggesting that Quins could survive on that basis. But I wonder how much of the gate receipts could be covered by a short term pay per view televised game. In support of the club I'd be willing to pay over the top to watch games. Say, £20 per game. They'd lose out on ancillary profits - bars, concessions, programmes etc - but with more televised games that would open up further sponsorship options.