"Hard to tell who's at it to be honest but I can't help think that this is similar to musicians claiming stolen IP over a song someone heard years earlier that's similar, at least to some peoples ears."
Men At Work got thoroughly screwed over with their Down Under track because of that. Some prior song (which to me sounded nothing like it) had some similarities which apparently meant theft. Judge was probably tone deaf.
"If they do win though I'd expect it to be a field day for litigation as other firms hop on the juicy band wagon."
As usual the only people who'll win will be the lawyers.