The current market is completely out of sync with the real value/costs of commercial property. The field has insulated itself from true price discovery for so long that it is starting to hemorrhage.
This isn't really about finding 'tech startups' a home, but rather that there's a chance that any new business starting up will need office space. And don't forget, current office-space tenants are going to start wondering why they're paying such inflated rates and the people across the way are paying 25-whatever% less for the same kinds of space.
Don't focus too much on new converts; think about everyone paying more for office space now than they need to.