Certainly... It was more of a if you're on AWS and you attract a volumetric attack, it's not going to cost you an arm and a leg.
Maybe you could run www on AWS and your real service somewhere with reasonable prices for traffic. In my experience, people who randomly DDoS tend to hit www rather than useful parts of a service.
In terms of running a data lake or keeping stuff for a long time, it's great, but of course they're banking on you moving a bunch of data to AWS to either train ML off of (compute costs) or keep it there and rack up storage space charges.
Maybe you could run www on AWS and your real service somewhere with reasonable prices for traffic. In my experience, people who randomly DDoS tend to hit www rather than useful parts of a service.