Productivity has risen in manufacturing, tech, and automation. This provides a moderate wage increase in those jobs, but a sharp drop in employment as well. Meanwhile, you also get a similar competitive wage increase in essential service industries (health care, education, construction), but because those sectors have experienced no increase in productivity, this is reflected in the price others pay for those goods, not in the employment figures for them. The drop in employment in high-productivity sectors then forces laid off workers into marginal service-sector employment.

Because of Simpson's Paradox [1], this results in flat or declining wage statistics across the whole economy, but the statistics obscure a lot of detail. Nurses, therapists, teachers, et al are doing okay; they're not going to get rich, and the rising cost of housing in some metro areas means that if they don't already own their house they may need to move far away, but their relative wages are keeping pace. Same with the few remaining union jobs: unionized longshoremen at the Port of Oakland make mid six-figures, as much as a software engineer at a startup. But employment in those fields is dropping, because of productivity increases, and everyone who is displaced out of them needs to find employment in the undifferentiated service sector, usually at much lower wages. And the people who actually provide the automation support that's driving this productivity growth are making out like bandits: that's where you see all the new millionaires being minted.

This'll continue until either society breaks down and goes to war or a bunch of new industries spring up and absorb all the new workers, who then differentiate their skillsets and bargain for higher pay. Both of these happened last time this occurred, in the early 1900s; the world wars were the springboard that drove adoption of new technologies like automobiles and airplanes. We see some possible beginnings of this with things like ridesharing and delivery startups, but it seems unlikely these are the big industries of the 21st century. More likely, they're transient uses for large crowds of unemployed people, and the real 21st century industries will be the micromarket: individual entrepreneurs that are each specialized in reaching & designing for a small group of customers, using home manufacturing & automated shipping tools that are in their infancy now.

[1] https://en.wikipedia.org/wiki/Simpson%27s_paradox