The idea of regulatory sandboxes is getting more traction as the legislator is trying to grapple with regulating new technology while still allowing it to develop in unexpected ways. These sandboxes present a number of problems (i.a. how do you graduate from them?), but are worth thinking about. This is a useful piece with criticism to start exploring the idea more in detail.
One thought, though: innovation hubs – suggested as an alternative – are really in a different category and seem incommensurable to the sandbox-concept.