Many to Many Relationships & Webflows 40 Cms Collection Restriction?

I am looking into using Webflow as a solution for a site which has a medium sized DB with 30 tables (cms collections) but with plenty of many to many relationship between them. This is possible in webflow as I understand it using the patter below?

Use an xref (or link table) pattern.

Collection 1
Collection 2
Xref is a collection which contains two single-refs one to Collection 1, one to Collection 2.

The problem with this is Webflows commercial positioning… even at the ENTERPRISE level, Webflow restricts paying customers to 40 CMS Collections. This is far too restrictive. Even a medium sized DB which wants to implement many to many collections in this way is easily going to exceed that. Why is Webflows CMS Collection restriction so tight?