The number of companies I've never heard of there is quite amazing. I'd really like to know how many of these are about data science/analytics.

Interesting list. Besides Palantir, I know these: GitLab, Databricks, MemSQL and mongoDB. I don't think "they" are using these to exfiltrate data "Crypto AG" style - I'd be surprised if "big data"/data science wasn't part of their operations, hence it makes sense to invest into some of their core tools. This ensures sustained development and maybe catering to CIA-specific edge cases.

Judging by the company names: Investments into RF companies also are more likely on the "tools we use" instead of the "rigged" side of things. The amount of Biotech makes me assume the decision-makers think this is an emerging market which will make a good investment.

So answering to GP: No, not compromised. I wouldn't be surprised if there were one or maybe even two hiding in plain sight, but I think for each individual company on that list, it is very, very, very unlikely that this specific company is compromised. If you don't trust them, make your sensitive GitLab and MongoDB instances accessible via Intranet/VPN only - but I suppose that's good practice anyway?