I'm a beginner and so far I understand the overall picture, I must say that an analysis for the customers (purchasing any licences) need to be created.
· What will be the estimate time and cost involve to transition to new Microsoft products
· Requirement and HR
· Eventually financial adjustments
· A system (perhaps a software)to evaluated the present cost versus the new cost resulting by using Microsoft, that will be a dream for both parties, it may stimulate further the sales of Microsoft and created less talk..
Basically a step by step need to be assess to get result on a secure financial way and reducing the friction (inevitable) of the transition phase
My experience (short) is that microsoft could be a bit everywhere