Much respect to what have you have achieved in a short time with graphite.
A lot of B2B SaaS is about tones of integrations to poorly designed and documented enterprise apps or security theatre, compliance, fine grained permissions, a11y, i18n, air gapped deployments or useless features to keep largest customers happy and so on and on.
Graphite (as yet) does not any of these problems - GitHub, Slack and Linear are easy as integrations go, and there is limited features for enterprises in graphite.
Enterprise SaaS is hard to do just for different type of complexity