This subthread is entirely about the allegation that Amazon engaged in a repeated pattern of actively promoting wire fraud (a RICO predicate offense) as a commercial enterprise.
They haven't previously been charged with a RICO predicate offense, but RICO doesn't require you to be separately charged with a predicate offense (either before or concurrently with RICO charges), only that the required relation to a predicate offense be in the allegation supporting the RICO charge. In fact, the central point in RICO is to allow charging people/orgs involved in schemes to promote predicate offenses for commercial benefit who might not otherwise be able to be charged as principals of those offenses.