You’re missing something. Metaphorically it is like the difference between having a long lived process that services web requests and spinning up your whole environment per request.
Also. "If we do this, what kind of problems to you foresee that we might need to watch out for?" Because every solution creates or exposes new problems, but that's not a reason to do nothing.
"I'm telling you, Molotov cocktails work! Anytime I had a problem and I threw a Molotov cocktail, boom! Right away, I had a different problem." - Jason Mendoza, The Good Place