You gotta think through the issues at hand here, I see very few use cases, beyond status like
@AJM points out, for a 1T 70 in the US. The problem as I see:
1) Price - they'd be very expensive, even base model, I bet $50k+, the fancy HO engines + autos, close to $60k I'd wager....they will have a chicken Tax due to be manuf in Japan.
Quantity will help pricing. I just read a thing a couple weeks ago that basically the 70 series is sold out until 2024 in the few countries it is already sold. If they would properly satisfy that market and add other markets the price will go down. Keep it a sought after boutique model and the prices will stay high.
2) Capacity - it's not good relative to domestic 1 ton truck, payload much lower and towing is less than 1/2 ton trucks.
Even then with the tiny bed the double cab will struggle. Overseas they can stretch the frame and get a GVW upgrade which is legally impossible in the states.
3) Comfort - domestic rigs are big, comfortable, barca loungers.....nothing wrong with that if you have the space to drive/park them and cheap fuel
Oil tankerlike maneuverability can get old too.
4) Size - we have room for big trucks, why buy a small one.....normally you do it for PRICE, but see #1
A smaller truck will generally have better visibility for general driving/offroading, be easier on roads/trails and will be easier to recover if it gets stuck.
5) Supply chain / knowledge base - it doesn't exist in the US to support, "landcruiser" techs are a dime a dozen these days and there is no supply chain to support, it would be big $$$ to setup.
In general that is a Toyota problem that a lot of people don't want to acknowledge. No doubt there is some "grass is greener on the other side going on too. I would also be very curious how they would take rust belt conditions since they were not designed for it and never see it in the few countries they are sold.