Sounds like this isn't the first time this has happened and won't be the last. Both Compass (the firm that employs these cafeteria workers) and Google both have experience working with unions and are committed to working through this. Happy that these employees are getting the representation they deserve. I hope this means that these people will get better benefits that Google FTEs enjoy and stronger protections.
As a FTE at Verily (an Alphabet subsidiary), the management's priorities are very clearly not focused on challenging the status quo in these areas -- they are focused on running the "core business". I can only guess the sentiment is similar within Google.
I look forward to seeing this issue continue to get light and hope that business priorities evolve to incorporate the more humanistic aspects of running a business instead of simply focusing on the bottom line all the time.