Heck Recon Marines ( and other special ops folks) are already using .45s, including updated 1911s. And that Ma Deuce has been around longer than I have.
There are some actual 1911s still in use. The one that I had when I was on active duty (BLT 3/4, 1973-4), was made during WW II, and was, in “used, excellent condition”. I never saw a “worn out” 1911, although I’m sure that some did, in fact, “wear out”. I don’t know about the Marines, having been gone for so long, but the son of a friend (retired SF) is coming up on his 20 years and serves in a front line unit. His unit’s M9s are flat out, worn out, and they are not that old. Granted, combat will do that but most M9 rounds are fired only in training (if you need to use it in combat, you are, as they say, in deep do do)
I’m glad that the “new” .45 may be made in Massachusetts, and nobody asked me, but there must be enough good 1911s in storage, to last for a long, long time, because they seem to (at least IMO) wear out very, very slowly. The new one, I am told, is cheaper to produce than the 1911.
Mr Browning didn’t live to see his M2 become the gold standard, but from what I have read about him, I doubt that he would be surprised.