The Fishman TriplePlay is a nice add-on at ~$400US. It works very well, low latency and wireless to either a USB stick, or an add-on foot controller. I have one on my '14 Studio and it req'd zero mods to the guitar.
The plugins are also very nice, but not required.
Other folks like Roland products or Godin (as mentioned above). I prefer the add-on because I can put it on any guitar (almost).
What I'm saying is that I agree that a Gibson MIDI guitar would be beyond what I would want to pay, and I may not even care for the model(s) they would choose to equip with MIDI capability.
Then think about how tech advances. How long before the MIDI tech in the $1500+ guitar becomes obsolete?
I wonder how many V-Strats Fender ended up selling?