Ayeee! We're actively doing this right now at my company. One of the more clever engineers has tackled replacing a $300k/yr Looker subscription, which we've paid for a decade, with a homegrown implementation sponsored by Claude.

And it seems like we're succeeding! To be fair, we weren't making good use of Looker's features and so the problem was easier than expected... but the core idea was validated in a couple of weeks, we've had just one person on the project part-time for a couple of months, and we told Looker (well, Google) we won't be renewing yesterday.

We're just doing a 1:1 conversion to start with the hope that our customers barely notice the change. Afterward, we'll re-envision our dashboards with the new found flexibility of not serving them via iframe.

Crazy times!