Reducing Maintenance $$$ - longer lasting chains & emtb tires?

I put a lot of miles on a Walmart e-bike. The tires do not have a name. I replaced the rear with a Trek (Bontrager) premium tire after 2,000 plus miles. The Trek was replaced this week with a little over 1,000 miles. I ride 20% rough gravel roads.

I have a Fuji front 29er mountain bike tire that lasted 6,000 miles. I expect less cassette wear because power assist is lower load on the chains and gears.
With heavier e-bikes, more riding I suspect the tire business will offer more just like the bike business is offering more in e-bikes and gravel bikes.