This looks like a simple & potentially enlightening question, but, its more complicated than it appears & examples may only be more confusing:)
Companies (tech & other) are sued literally all the time under RICO (which is now over 40 years old), though mostly as civil rather than criminal offenses. Success rates vary. Often there are better ways than RICO. And, also, most cases never make it to court.
Basically, prosecutors choose the charges they seek to prosecute based on their judgement of the likelihood of conviction; RICO can effectively multiply the number of charges...which some judges are less keen on. There are many factors at play with RICO, but they won't clarify anything, so I'll leave it there.
It is certainly not clear that the DoJ will even prosecute Uber under RICO. Its a possibility, but perhaps not the most likely approach, for a variety of reasons. That said, its far from impossible. And, some USAs use RICO more than others (eg Preet Bharara).
Long story short: criminal investigations & charges are the issue, more than whether they are charged under RICO. Being criminal investigated is rare in most businesses (less so on Wall St? Idk, speculating) and being prosecuted, even rarer.
