This is going to add to the childcare crunch. At present, there is not enough childcare for non-Google workers. Is it not possible for some other ownership to rent the facilities, take on the same staff, and open it to everyone at reasonable childcare costs?

If Google couldn't afford to run these sites, what is the chance that another company could afford to? The employees paid a lot, but Google's subsidies were large.

Companies and senior homes start off with good intentions. But once the idea becomes an actual, working situation then all of the legal people and state legislation comes into play. All types of restrictions pop up, and the cost if anything goes wrong will be a giant law suit. If attention shifts to avoiding law suits appears for any reason then any company needs to think about it's core values and what they are investing in. Any situation that would create ugly publicity is not worth is.

It doesn’t appear that Google “can’t afford” to run these sites but rather that they have decided to spend their $80 BILLION in net profit last year on other priorities.
This seems to be part of a troublesome trend. The Chan Zuckerberg Initiative just announced that they are abandoning their community focused programs like equalizing educational opportunities, Web Link and is now a purely “science based” philanthropy, Web Link
Now that these trillion dollar corporations are not needing to create local goodwill in support of massive local growth of their campuses, they appear to be cutting back their support of their communities and employees. Thankfully, there are still billionaires like the Sobratos who are deeply committed to addressing regional needs in affordable housing, education, and sustainability, Web Link

If, as some above suggest, Google can't afford to run affordable childcare for its workers and employees, then it is unlikely that anyone can run affordable childcare. Does this worry us? It should?

Affordable childcare is needed not just for tech workers, but teachers, healthcare workers and others in the workforce. Teachers may be able to get their children into the school districts in which they work, but that is only when the children reach school age. What do teachers do before then?

Childcare is what keeps women in particular, but both members of a couple in the work force. Childcare is imperative to enabling parents to work at least part time and more importantly for single parents.

If these running centers cannot continue functioning under the ownership of Google, then it must be possible to pass them on to some other body. The teachers are there, the sites are there, the equipment is there. Definitely the need is there.