Everyone could tell you that once they had your overbuilt shit locked in to their very specific apis and services they had you by the short and curlies and by god were they gonna squeeze for all you were worth.
On-prem solutions don't necessarily protect companies from this either though. Anyone staring down the barrel of a Broadcom renewal for on-prem VMware licenses knows this pain.
Broadcom's screwing over of VMware has been the biggest accelerator of migration into the cloud in the last 5 years.