I didn't say that all trade is positive-sum. I said that some is.
You're arguing a straw man. Which means your reading comprehension is bad or you're intentionally mudding the waters. Either way, I think we're good here.
Free exchange obviously and provably is, but that's not _quite_ what's going on. I see a rapid trend towards regulatory capture, monopolization and setting up to siphon out money. All from the same few actors. And if history around tech hype serves us well, then we should be wary of a large, inflated bubble that is going to burst eventually, even if useful things are created meanwhile.
The exchange of services and goods in a market is positive-sum.