Uber has massive revenues as do many other capital intensive businesses. That doesn't make them profitable.
The parent to your comment chose revenue likely to note that Google makes money from the bed ie. it's not a service given away for free.
https://www.cnbc.com/2020/02/03/google-still-isnt-telling-us...
Alphabet said YouTube ad revenue in the first quarter reached $4.7 billion, while cloud sales came in at $2.6 billion. The company broke those numbers out for the first time, but it’s still not disclosing profit figures for the units.
Given how quickly and easily the axe comes down on sub par Google products, I highly doubt they'd keep YouTube if it wasn't profitable.