Income for the top 1% of the population is up over 400% over the past 30 years, while remaining largely flat for the rest of the workforce. The tech boom is well underway, it's just that only a tiny fraction of the population is capturing the vast majority of the benefits. The boom is not just about efficiencies, it's also about centralization and winner-take-all market dynamics.
The money will soon start to trickle down from the top 1% especially with the latest tax cuts. Be patient just a little more.
When rich people put their money into employing people for non-productive servant type jobs, welfare for people (to not work), loans for people to go to college (to not work, at least in the short term), hand outs for their children and family members (to not work) then the end result is a lot of people not working and a lot fewer things being produced by the people who do work.
If a rich person buys a yacht or a private plane or a hundred million dollar mansion, that creates economic activity (people have to build that stuff) but it does not have the same secondary economic impact as investing that money into a factory, basic infrastructure, R&D, or some other productive use.
Money is trickling down, but far too much of it seems to be trickling down to a non-productive servant class and non-productive veblen goods.