Is that a problem with AWS? I thought people accept paying a premium because they don't have to deal with these issues anymore. If bandwidth is relatively expensive less people are going to abuse it, etc...
When things don't work, AWS doesn't tell you a reason why it didn't work. Instead they teach you lessons about how to architect your applications for failure by saying:
The EC2 team also recommend that you architect for failure using the white paper linked below:
https://d0.awsstatic.com/whitepapers/AWS_Cloud_Best_Practices.pdf
For people who use it as a VPS provider, they are going to be hard hit by other tenants who are applying the intended purpose.