Providing different product packages that are usage and featured gated in order to enable SMBs to use the basic version while giving enterprises the functionality they need in the enterprise version is a core concept in going up market with SaaS. We called it "product assortment" based on a talk that Michael Dearing gave several years ago about pricing. An overview of the concept with some examples can be found here https://www.enterpriseready.io/features/product-assortment/