Why doesn't Toyota offer the Tundra with a full-time 4wd option, Auto, or 4WDH with locking center diff like other truck models?

I've always been frustrated by Toyota's positioning and decisions regarding certain vehicles, but none are more frustrating to me than that of the mix and match drivetrains between the Sequoia and Tundra.

Why did/does Toyota not offer the Tundra (gen2 and gen3) with a 4wd system similar to that of the gen2 Sequoia (and to that point, why not offer the gen3 Sequoia with a similar drivetrain to that of the gen2 Sequoia or LC250/LC300 products)? The 4wd gen2 Sequoia's had a part time 4wd system with center locking option (i.e. 2wd, 4wd high w/ open center diff, 4wd high w/ locked center diff, and 4wd low (center diff auto-locked)).

This gave you the 2wd option for dry pavement. The full-time 4wd/awd of that of a Land Cruiser (or similar AWD performance of "Auto" Ford/GM product), a true 4wd high and low. It seems that the Tundra shares so many similarities with the Sequoia, yet opts out of what would make the truck that much more functional for 90% of winter road driving situations.

What's the thought process and reasoning behind this decision - seems like it could be easily implemented in exactly the same way as in a gen 2 Sequoia.

Has anyone ever done or discussed the ability to drivetrain swap a gen 2 Tundra with a gen 2 Sequoia center diff and electronic drivetrain selector? Is it possible or cost effective?

IMO the gen3 Sequoia and Tundra would be a huge hit for more people / families IF it had an awd/FT4wd/auto setting like so many of it's competitors. The size, hybrid system, toyota reliability reputation, etc - but the miss is not having a winter/mountain oriented drivetrain that is a no-brainer to run all winter long.

Toyota - if you are listening. Please make the gen3 truck products available with a full-time 4wd Torsen unit like the older 4runners limiteds, Sequoias, all LCs/LXs/GXs/etc.