In a Napoleonic move that could brutally crush a grower number of competitors, Spotify appears to have invested some of the $250 million it raised last November by ditching streaming caps for ad-supported streams.

The move is akin to a land grab in which the powerful simply uses its power to become more powerful - unlimited free streaming will be hard for others to justify. Already the largest service of its kind, Spotify managed to acquire a stratospheric quarter bil through various venture capitalists, the latest being Technology Crossover Ventures, who are far from a new-comer in the streaming services game having also invested in Netflix.

While this latest bump has allowed Spotify to employ a tailor to strategically and professionally deepen those pockets for them, it's unlikely that the services that will be most directly affected, such as Beats Music and Rdio - which still employs hour-based streaming limits for unsubscribed users, were even the main target. When considered logically, Rdio is already struggling, having laid off staff last November under the idea that it was 'streamlining' to be more efficient. Secondly, Rdio isn't the type of service that would draw away existing Spotify users that prefer not to pay for a subscription. Rdio has limits, Spotify doesn't. The type of user that will be drawn from a Spotify subscription to an Rdio account is a user more concerned with the combined design, usability and social aspects of the smaller site. The numbers however, remain too paltry to really concern Spotify.

The move is likely to be more in the region of an attack against the likes of iTunes Radio, just to keep it in its pen marked by Apple users as 'haven't quite got round to trying out yet', and Google's Music All Access, which is... well. It just kind of is at the moment.

Because while neither of those tech giants' streaming services are competing on the same stage as Spotify, a shrewd move, a lucky move, or even a dumb move on Spotify's part could see a much much wider user base rise from the Apple or Google backbenches to take Spotify's crown.

However, that's not to say the smaller services aren't on the mind of Spotify - the announcement was just a week before the hyped release of yet another service - Beats. While this move by Spotify is unlikely to result in any significant profits boost (though many companies working the 'freemium' model find the longer a user stays with a service the more likely they are to pay at some point), the more ingrained Spotify is into more people's lives, the harder it will be to knock it from the top.

Did you hear that Japan will be taxing their foreign downloads? Yep.