@mhoye we had a vendor that our data team was using for replicating our databases. Super expensive, and with a pricing model clearly (to me) unrelated to their actual costs. This came to my attention about a month before we were supposed to renew our annual contract.
In that month I replaced them with some Rust that was an exact drop-in, but faster, with a couple of new features we had long wanted, and literally *two orders of magnitude* less cost. Hundreds of thousands a year to less than two thousand. The compute now easily fits on a laptop, but it does benefit from a local network connection to the database 😉
Their CEO was pissed we were leaving (because they had already given us a big discount) and absolutely certain there was no way we could possibly do it cheaper, and that we'd come crawling back. Given the obvious insanity of that position, my only explanation is he was drinking his own SaaS pricing Kool-aid.