I was thinking about this the other day.
I went down to the club shop one Friday evening and popped into the Bell & Hare for a swift one and there was one other chap in there. Not being from the area and not having been in there on a non match day before it looked really odd being so quiet and empty.
One positive I can think of is that if they all survive one season, then they'll have twice as many people coming into the area on match day from Aug '18.
But I reckon that's a pretty big if for some.
Tbh if they can't cope with Spurs moving out to Wembley they could easily sell up and make a killing. Like you say, once we move back in the revenue will jump to new heights for anyone that stays.