That's a fickle slice though. They're only attractive to (a) individuals or (b) companies too small to just deal directly with standard office space brokers.

That's a fickle slice though. They're only attractive to (a) individuals or (b) companies too small to just deal directly with standard office space brokers. They need larger accounts to drive their COGS down, but larger accounts can bypass their service. So they're like a cloud provider, except without all the synergy and lock-in. The only future where they're moderately successful is one where workforces are substantially more spread out (one employee in each different city) and they're a broker. But even then... they'd face the challenge of scaling their business geographically (office in every city) vs having larger offices in hubs.