> If you want proper serverless, you have to pick a vendor you trust and stick with them.

Some of us have to consider platform risk in our designs and not just ignore it. This is what makes lock-in an issue in the first place. Some times, well, most of the time it isn't an issue. But when it is, it's a huge potentially-company-destroying issue.

Different companies have different risk profiles, and it may be perfectly fine for many to just ignore this risk while others, quite reasonably, have to consider it.