Oracle and companies like it are definitely the hardest to get on board. That being said, our users have already closed deals with Fortune 500 companies using the standard contracts, and they see a big decrease in the percentage of deals that they have to do on their customer's contracts.
We're also encouraged by the examples of standard contracts in other domains that have gotten traction with large enterprises. Basically all of the big banks use the ISDA master agreement^1 for financial derivatives, and the vast majority of ads sold on the internet use the IAB standard terms^2.
1 https://en.wikipedia.org/wiki/ISDA_Master_Agreement
2https://www.iab.com/wp-content/uploads/2015/06/IAB_4As-tsand...