And just how commonly do we see such[1] fraud across any business or industry?
Cough, pharmaceutical cos, doctors, social media & search giants, car manufacturing giants. Any of these ring a bell?
[1]As in, the above (your) definition of fraud i.e. misleading customers, by deliberately under delivering and over promising. With this definition, many businesses and accepted practices are fraud.
IMO, true fraud is what VW with their cheating device. Facebook did with integrating WhatsApp profiles. Theranos did with fake IP. Opioid manufacturers do by indirectly incentivising doctors. Don't you think so too?