"Now that there's HDMI and USB 3.0 on the Macbook Pro, there's no need for TB. The uptake of USB as standard means there's not really any reason to pick the more expensive TB over USB, for 99% of users."
This is the essence of the argument.
There is no question that Thunderbolt is faster than USB3, and no question that it is superior in other ways, as well.
But this MAKES NO DIFFERENCE insofar as the market is concerned.
What matters more to "the market" is cost and convenience. Compare the cost of a T-bolt external drive, vis-a-vis the cost of a USB3 drive. Cost-wise, which one wins? Which is the "average user" going to buy?
Compare the cost of a T-bolt cable ($50) vis-a-vis the cost of a USB cable (as low as $1). Cost-wise, which one wins? Which is the "average user" going to prefer?
Many if not most of the readers of this post are too young to comprehend the "Beta vs. VHS" struggle of years ago. Sony had the superior technology with its Beta format for tape-based video recorders, but JVC won in the market with VHS (one reason is that VHS, although the picture quality was inferior to Beta, offered longer recording times). In the market VHS won -- and the win was so lopsided that even SONY offered VHS-based video recorders in its later years.
No doubt a few Mac users will have an actual -need- for T-bolt. They will use it.
But for the overwhelming majority of Mac users, USB3 will do "well enough". And that's what they'll buy.
My guess is that unless Apple takes action to drive down the costs of T-bolt to near the costs of USB3 peripherals of the same purpose. we'll see T-bolt "wither away on the vine" in very short order.
Even if that occurs, it may make little difference, and I predict that USB3 will win anyway. Look at firewire800. How many actually use FW800, vs. USB? FW800 is an "established technology", the peripherals are not overly expensive (though they cost more than do USB peripherals of the same purpose). Yet it will soon be eclipsed by USB3.
Superior tech doesn't always triumph uber alles.
In the market, USB3 is the winner.
To deny this is to deny economic reality.