Calling this "the elephant in the room" is very insightful. It surprises me that AWS is so often recommended as the best choice for new businesses without large capital. AWS automatically scalable infrastructure changes DoS outcomes from 'your server is down due to DoS', to 'your company is out of business due to DoS' (and for small company it doesn't even need to be a large DDoS, shell script on a single machine with decent link can generate substantial AWS cost).