Hi Gris and everyone,
Not a very techie post, but thought I'd contribute a little on the economic case for open-source, and Apache Beam in particular.
TLDR; We're finding that, at critical points in our sales cycle, our customers are choosing us precisely because we offer a 'call option' on future runner choice.
I thought it would be refreshing to hear this, since lots is written on technical/community benefits of open source and how (obviously) it helps you save costs on otherwise-proprietary/expensive solutions. Little's been written about positive impact on revenue-side of the ledger.