Vendors see a business unit separating and see two things: a weakened negotiating position and a time-pressured buyer. That combination is exactly what they're designed to exploit.
They push consolidation, offer fast-commit discounts, and extract higher per-unit costs because you're now a smaller customer negotiating alone.
The deal timeline is fixed. IT separation isn't. You can't flip a switch on network, security, data, and identity. So you either over-invest in infrastructure you don't need yet — or separate without the controls you need and inherit the risk.
Every vendor you talk to has a preferred answer to that contradiction. None of them had your interests in mind when they wrote it.

