Deliberately targeting growing competitors using things like predatory pricing [0] is not the same as growing and diversifying.
[0] https://www.aei.org/technology-and-innovation/who-should-ant...
[0] https://www.aei.org/technology-and-innovation/who-should-ant...
The thing is, amoral behavior can be seen left and right, through large part of history of Silicon Valley (remember Gates & Jobs & Xerox).
To me as an end consumer, Facebook has a true monopoly and progressively shittier products compared to Google - ads comprising half of my feed, their core product is still broken and buggy in many places but that's another topic. Recent UI changes made it much worse product. Google looks great compared. But again that's very personal and limited view.
So was slavery. Yet somehow we managed to legislate that away.