Microsoft, like almost all large companies, is pro-”don’t sue me”. Those policies that you mention, along with employee diversity programs, are there to minimize the chances of disgruntles employees, backed by liberal activist groups like the ACLU, successfully suing the company. Because they are a public company, they have a responsibility to protect the shareholders from that kind of risk, and that’s why they do it. Smaller companies aren’t as big a target, so it’s less of an issue for them.
These sorts of employee-oriented protective measures are a lot different from pushing an agenda with the general public, which is what Google is doing here.