Ehh....in the time I was there, they bought Tableau _and_ Datorama in the same month, and they already had reporting/analytics features (although not as in-depth).
They also bought a dozen or so machine-learning companies that all did similar (or even identical) things over the span of the 5 years I worked there.
Famously, they bought Heroku, and then completely ignored it (including internally -- there were efforts at one point to have Heroku be the "way forward" for internal development on PaaS providers, and they scrapped that entirely while keeping Heroku more-or-less running).
I'd say Salesforce tends to buy whatever shiny thing gets Benioff's attention for the moment, usually because he talked to somebody at a conference. The guy tends to ram through quite a few questionable business decisions, and these days Bret Taylor's job as "co-CEO" is mostly "cleanup crew" for Benioff's various whims.