OP keeps repeating tha Google is making money from certificates. I don't think Google sells certificates, and even if they do the revenue is insignificant for them.
Does anybody know what OP may be referring to?
It was written back in 2019, but they were partially correct. Google did make their own CA (https://pki.goog), but they now also give certs out for free via ACME. And they didn't boot LE.