The externalities are on the new products, not the right to repair, so a true pigouvian tax would be on the sale of products that can contaminate our environmen

The externalities are on the new products, not the right to repair, so a true pigouvian tax would be on the sale of products that can contaminate our environment regardless of repairability. (Otherwise, people would still be encouraged to just rebuy the product out of convenience even if it's repairable.) As I said elsewhere, I'm not saying there shouldn't be a tax, I'm just saying it wouldn't be a pigouvian tax.