[qaq]

At Netflix scale they are not replaceable by other vendors because other vendors do not have enough capacity to accommodate Netflix migration.

[toomuchtodo]

Can you provide information as to how much capacity Netflix would need to migrate? Otherwise, this comment has no basis in reality.

[qaq]

there are estimates that netflix is consuming about 20% of AWS. AWS does not publish a list of DCs but from regions and AZs you can put a lower bound estimate at 40 so it would be anywhere from 8 DCs to whatever the upper bound is (I guesstimated 20)