As for the IOT thing, I'm not sure having "iot" in the name will be that important for selling domain names... brands don't have to annex the products they sell to their names, like Apple Computer is now just Apple - they sell other things now other than computers - in fact computers must now be their less lucrative department.
I'd rather focus on what will be achieved by the IOT: devices talking to each other, aware of each other, almost without user interfaces/intervention, etc...
Of course this rationale mainly applies to brands, a specialized store will benefit (although temporarily - technologies become obsolete very rapidly these days) from that iot prefix or suffix...
