Thicker denim might last a little longer, but even the best stuff isn't going to last longer by multiples reflecting the price increases. Good for you for getting the life out of the pants you did - if you liked the fit, I'd stick with them.

If you're looking for something a little more local, with different denim options and not breaking the bank, I have a pair from Dearborn Denim that I really like. The crotch just gave out on them for me a little sooner than expected (3+ years), but I might have worn them every day for 10 months. WFH or not, I will not suffer the indignity of sweat pants