In order for a trademark owner to bring a claim under the ACPA, the owner must establish
the trademark owner’s mark is distinctive or famous;
"Sirius/XM" were obviously a well known brands at the time.
the domain name owner acted in bad faith to profit from the mark; and
Obvious also the case, he never did anything with the website, his only intention was hoping Sirius XM would buy the name from him for an astronomical sum.
the domain name and the trademark are either identical or confusingly similar (or dilutive for famous trademarks). Obviously also the case here.