I'm sure this sounds very bleeding heart, but as a business owner, I'd rather give up stake in my own business to keep my employees and their families fed rather than opt for automation, firing my employees, and sitting in an empty office with piles of cash.
Business owners and shareholders need to learn empathy and start valuing the community at large over their own narrow interests.
To answer your question, though: I don't know.
The U.S. is an owner/exec-first economy, with labor holding very little political power. "At will" employment and "Right to Work" are inherently anti-union policies and although some states have successfully beat them back (Missouri for example), a majority of the country's labor is still without ways to organize.
It's a chicken and egg problem. A unionized shop probably couldn't compete against a full automated shop (depending on the industry). So until _most_ shops are unionized – which won't happen with rulings like Janus – it's almost an impossible task to organize the working class.
More reading:
https://www.washingtonpost.com/business/2018/08/08/missouri-...
https://www.theatlantic.com/politics/archive/2018/06/janus-a...