[flavius29663]

"ethical" is very hard to prove or disprove. For example, is it ethical for me to pay 400USD for a camera, since there is a 350 alternative that I didn't even know existed?

A complete and fair catalog is very hard (if not impossible ) to implement. But even if you did, that would NOT be enough. You might not know you "need" a good mattress unless an ad would sell it to you. Btw, if you think a global catalog would solve all these issues why not build it yourself? It can't be that hard... There are probably only a few billion products on earth, with a few variants each. Why not just do it?

Speaking of "ethical", there are many concept in the modern world that can be seen as "un-ethical", but at the same time they make the world run much better than the medieval (or communist) world they replace: interest, inflation, income taxes to name a few.