It's fraud because they impersonated non-real persons in order to obtain good by deception. E.g. not only did they violate the TOS they also provided fraudulen

It's fraud because they impersonated non-real persons in order to obtain good by deception. E.g. not only did they violate the TOS they also provided fraudulent information during a commercial transaction (buying the ticket). That's illegal. Disclaimer: IANAL