https://www.reuters.com/article/us-alphabet-results-research-analysis/analysis-for-google-plenty-of-cash-with-nowhere-to-go-idUSKBN2CF2L0

In announcing a $50-billion share buyback on Tuesday, Google-owner Alphabet Inc confirmed a paradoxical dynamic: its core advertising business is so profitable, and so dominant, that it has few options for usefully deploying its cash.