Yes difficulty reaching >1 trillion is highly likely.
I would point out that even with
free hardware, $0.10 electricity and <1W per GH the exchange rate would need to be $42,860 per BTC. In other words miners would be paying $42,860 in electricity (or more if they have less efficient rigs) to mine one BTC.
Awesome analysis.
Excellent point, but do me one favor, someone who's happy to do math right now, what difficulty is justified by a $110 price? If 1 trillion diff corresponds to $42k price for BTC, what BTC price of $110 corresponds to which diff?
That should give us the end-point of difficulty leveling off and should also tell us roughly when to expect that to finish levelling.