Would you give a founder a discount on your product, in return for a discount on theirs?

If I found the product helful, yes.

I am vehemently anti-discount-giving on my own product. I think it waters down the value of the product (even subconsciously), and always position it as: instead of giving a discount, keep adding value/offerings until it makes sense, instead of lowering a price In the same light, I love supporting projects at full price that I think are cool, have potential, or save me time/money, because I know I appreciate others that insist on paying full price on my own products

I faced similar kind of issue last time, I am still searching for some proper solution. MyGiftCardSite

If they are mutually beneficial products. YES absolutely!