That makes sense under a certain set of assumptions I suppose, namely that you might think AWS's problem arises mostly from normal customers not realizing that someone has hijacked their account to run GPU crypto mining without their knowledge, because GPU instances were not their intended use case. So "people that don't know what they are hiring" is the failure mode you're concerned with.
But I wonder more about, say a fraudster using stolen credit cards or gift card abuse, to open an account, or abuse a free trial, and if Lambda Labs makes it super easy and low friction to start up a GPU, then the fraudster can open an account, mine crypto immediately, rack up as much crypto as they can for days or a month until billing fails or trial expires, and just try to squeeze Lambda for as much computing power as they can subject to Lambda’s ability to detect fraud.
Low friction for customers, usually translates directly to higher risk of abuse. AWS adds its limits and friction for a reason, not because they enjoy making life harder (esp. since, easier for customers == more business/revenue).