While Sirius has done exceptionally well with recent rivals and growing its subscribers respectably, can it compete with a free Apple? Not many have proven to be able to compete on price -- much less free -- despite Apple products being priced typically higher than the alternatives. What's more, based on the features offered by Samsung's Music Hub, including allowing users to upload and store their own music for on-demand access, the advantages once enjoyed by Pandora and Sirius will now be overtaken. First it was Samsung, now possibly Apple. Sadly for Pandora and Sirius, any level of success generated by these two big players will likely attract others -- names such as Google, Amazon ( AMZN), and perhaps even Microsoft ( MSFT) might soon enter the mix. Remarkably, we haven't even touched upon Research in Motion's ( RIMM) Blackberry Music service, which currently has an impressive number of subscribers. However it is hard to imagine that Apple will enter any environment without intent to dominate. Follow @rsaintvilusAt the time of publication, the author was long AAPL and held no position in any of the stocks mentioned. This article is commentary by an independent contributor, separate from TheStreet's regular news coverage.