[Avodah] Reason for Hamotzi ?

[SBA]

In the latest issue of the Mevakshei Torah journal, a reader asks
about the nusach of "Hamotzi Lechem min Haaretz".

He notes that all other similar brochos use the workd "Borei",
eg 'Pri Ha'etz', 'Pri Ho'adama', 'Minei Mezonos', 'Minei Besomim', 'Pri 
Hagofen'.
So why not here as well?

And after all, we do not actually get our bread straght from the ground.
Though I see one of the meforshim writes that the nusach refers to after 
Moshiach'd
arrival, when loaves of bread will appear from the earth...

SBA