“Lock-in” comes because others depend on the benefit from your services, not because you’re completely in control."

- this is hopelessly naïve. Lock-in occurs when you no longer can generate the capex to resolve the opex drain that a vendor squeezing you has created. If any vendor realises that you can raise the capex to get off them then they will raise the opex demand to the point of financial viability to maximise their returns and to ensure future returns (because by doing this they underline their control)

Vendors can't help doing this, it's natural. Also it's their duty to their shareholders.

Our responsibility is to NEVER get into this situation.