Having a subscription is only a small part of the total cost. Access works best when combined with a bunch of VBS/macro scripts, which IT departments globally are trying very hard to stamp out completely. Access also needs its own set of permissions and manager of permissions since it can't inherit permissions from anywhere of the other usual Microslop security stores - at least, not without having its own developer/maintainer/champion on tap.
Not to mention the agreed wisdom that while Access is fantastic for rapid-prototyping applications/warehouses/ETL processes, any "permanent" DB/DBMS/solution worth doing in Access is worth doing in a 'proper' database with a proper front-end.