I don't pay for Kite (or any other proprietary developer tooling like Github) because one day your company can choose to shut down, change its terms, or raise my prices and I'd be left without recourse, while also being locked in to a proprietary workflow. Just like you did today, which validates my hesistation.
Kite should have been open source from the very beginning. I hope the team can take away this learning for their next startup. I applaud teams like GitLab who build entirely in the open--and, as a result, have highly successful products and businesses.