> There was ~$107 billion in online advertising in 2018. There was ~$145 billion traded in Nasdaq listed equities yesterday.
That is a pointless comparison. That $107b was all revenue for somebody (Google, Facebook, etc), while the $145b was just the nominal value of shares traded.
I’ve worked in both. For the purpose of the earlier conversation, the auctions for ad exchanges happen at about 1 order of magnitude more than for exchange tradable symbols.
That is to say there is no tech reason that financial exchanges couldn’t run auctions.
Aside: personally I think that continuous exchanges are great & people who have problems with them usually don’t know what they are talking about.
not necessarily, money has velocity; market participants don't have $145B to spend, they spend a fraction of that and then reconcile balances at the end of the day.