Google still has 20% time. That is a myth. Google even has an internal startup incubator that allows participants to spend 100% of their time on 20% projects.
https://www.forbes.com/sites/miguelhelft/2016/05/19/google-c...
https://www.forbes.com/sites/miguelhelft/2016/05/19/google-c...
Source: I work here and take advantage of 20% time.