New power/wealth generation is and will be in finance for the foreseeable future. I can go into great detail on this but for TL;DR purposes, I will generalize: finance > tech in making aggregate money because finance only cares about making money and tech cares about a lot of other things, which in turn generates money.

I moved into tech because I liked it, not to make money. If I were still in investment banking, I'd be making 7figures a year (and killing my soul in the process). This is not a judgment call; it's a personal choice. There exists good-willed bankers as well as selfish, rent-seeking coders.

Moving money around has not been limited to the 19XXs. It's been around since humans put a face of an important person on some piece of metal (actually earlier, but it lacks the imagery).