[schnevets]

I'll do you one better: a curated retailer that only carried merchandise with a 10+ year manufacturer's warranty. And they automatically register/store all proof of purchase information in an online portal.

If that isn't profitable, make the warranty storage/customer service advocacy a yearly subscription where they take care of the full return process.

[bonestamp2]

This is basically Costco, although it would be even better if it was truly Costco. I mean, they do require your receipt, but they can often look it up for you and they usually take returns well past the warranty expiration due to their 100% satisfaction guarantee.

[stickfigure]

I've returned countless things to Costco (a tiny fraction of my embarrassingly large monthly habit) and never brought in a receipt. They just look up the purchase in my account.