If you're a startup, I think it's actually a pretty good design constraint. You're going to end up with a single system to optimize (inevitably in your 110% tim

If you're a startup, I think it's actually a pretty good design constraint. You're going to end up with a single system to optimize (inevitably in your 110% time because there's no platform team) and a leg-up in shipping with fast and well-tested infra (or at least better tested because it's what you're using everywhere else). Dropping-in and tweaking stuff across many parts of the system is way easier if it's consistent, easily testable wherever you are, and you know that tests for every dependency are being run on each PR. On the opposite extreme you're talking multiple PRs, languages, test suites and deploys for every new feature. I've watched startups do this and die before finding something people want to buy.