I was at a databricks conference where they talked about computational power and how that should be a key factor when choosing a platform and not just be guided by price because if the same task could be done by databricks with photon in half the time even if it cost a bit more then it was worth it.
But I have seen that in our databricks cluster photon is only an option that you can enable and not something by default which leads me to think that there is something I am missing.