Sometimes decision are not reflection of the merits of the individual options, but of the fundamentals of the challenge. Changing a business platform is an incredibly invasive/disruptive move, with huge costs (money and opportunity) and meager gains. Does not mean that say, Dynamics, is not any good.

Migrating from SAP to MS CRM for Microsoft would be more a billion project than just a few millions.

I mean there's no right or wrong in any of this, but it's not like that would be an invalid takeaway.