Lots of comments about salesforce app exchange, but I will say, as someone (unfortunately) very familiar with Salesforce and also startups ... I think there is a huge opportunity here.

The Salesforce schema of opportunities is incredibly out dated for modern software companies — you only need to look at the explosion of "PLG CRMs" in the past few years — I think there is a massive opportunity for a CRM that integrates natively with Segment/Posthog to onboard event data.