[k__]

"using cron to keep my cloud functions warm at a cost of pennies per month"

"you still pay the cold startup penalty on subsequent scale-ups"

That's probably why they don't care.

You just keep one warm AND you pay for it.

If you don't have parallel requests this is a good thing for you, bot everyone else doesn't have much gain from only having one hot instance.

On the other hand you can probably get around this with UI tricks when facing and end user. Native apps are installed anyway and web apps will be delivered via S3/CloudFront etc.