If you back up about 50-100 pages on this thread, you can see that a shop advertised here (the owner was a convert to POT) and offered not only to accept POT as payment but accept it at a discount relative to BTC and, of course, dollar. And yet, it did not work. That was before the latest version of the wallet was successfully implemented. So yes the commerce is not only possible, it's a natural thing... except that NO ONE will buy POT in any significant amount for fear it won't be here a few weeks/months/years from now. And without that real-life use, this is just another copy/paste clone that brings nothing to the crypto table so, like I said, it is by any account already dismissed like so many other clones before.
Quick note for you: BTC is NEVER going to be mainstream. Ever. That doesn't mean it won't be used (it actually is being used -and abused- as we speak, and has for years... although one of the users, Microsoft, just started ceasing to accept it as payment), like all shorts of other electronic payment options.
Oh, I claim to know what I know, not what everyone is doing. That is clear, quite clear and reachable by anyone that can look up the blockchain and the exchanges volume on sells and buys. No mystery there. As for the race being far from done, you are the one that claims to "know" what everyone else is doing: I'll tell you what they are NOT doing (except for this johnny-come-late "accumulator": They are NOT buying this shit.