I have a major treat for you both if you haven't already listened to this A16Z episode with the CEOs of both companies - https://overcast.fm/+BlzGXPbI0
Databricks is easily the best spent money in my stack.
I also love Hashicorp's products, but unfortunately I'm not paying them anything. Before Terraform Cloud their enterprise offerings were quite bad IMO (no SaaS, had to talk with Sales, provision infrastructure yourself, high initial commitment, etc...).
I will probably start using Terraform Cloud in a near future thought, just waiting for some key features to be released so I can integrate it to my pipe (Gitlab Groups integration, more flexible module layout).
I tried Terraform Cloud and went back to open source. I felt like it was a step backwards from Terragrunt. I'm only using it in the context of AWS though. I might try it again for a future project.