Many years ago (pre 1997) , in a superbly high energy rant, John Prescott was on QT and he tore into the Tory wet dream of a purely services based economy saying that a country where everyone is trying to sell insurance to everybody else isn't a model for propserity.
The modern "tech" era has become bots selling to bots on platforms that are increasingly required to play hide the losses with a tsunami of "innovation" coupled with a heavy measure of "look over here, don't look over there".
TL;DR, there isn't enough "wealth" in the world to underwrite all the cheques being written.