An alternative, which would not require strong labor unions, would be massive final consumer spending on the part of the government: this is the spending where the government is the final consumer, which is currently only 33% of the Federal budget. A massive program of rebuilding infrastructure would help force the money into the real economy, and this would have some of the same effects as strong labor unions.
The key distinction isn't so much between "workers" and "capitalists" as between "voters for whom cashflow is critical" and "voters for whom asset income and fixed income is critical" (i.e. pensioners! A huge fraction of the voters!) Within the "cashflow" category you also have the question of whether you've paid off enough mortgage to regard house price inflation as good rather than bad, or whether you're staring up at the wall of deposit required to enter the housing market.
The US went off the gold standard in mid 1971, and the productivity/comp divergence starting happening in 1972.
A lot of changes to the economy can be traced to 1972.
https://www.epi.org/publication/understanding-the-historic-d...
https://www.mckinsey.com/featured-insights/employment-and-gr...
You can see that labor begins to weaken after 1960.
maybe there are other factors involved ?
https://www.pgpf.org/budget-basics/what-is-the-earned-income....
Even if you wait until the next crash to buy, the chances are big that you will be paying more that if you bought today at an all-time high.