Don't forget startup and distribution time. It's not terribly hard to have a scratch rust container which is about as slim and secure as you can get. That container will startup pretty much instantaneously even if it's cold.

You are looking at ~5mb container vs 200+mb if you did a jvm based container.

It's probably overkill for most applications and companies, but it's something to keep in mind if you need fast scaling for cheap.