Would it work to denote that 80 % as a separate product X that only has internal customers?
On the one hand, it's the obvious solution. On the other hand, that would move the developers of X further away from the customers of A and B.
On the one hand, it's the obvious solution. On the other hand, that would move the developers of X further away from the customers of A and B.
What other approaches to shared-something cross functional product teams are there?