Well Apple may have had good business reasons for blocking access to the various Google Voice applications (and even pulling one previously approved app) the effect has been to push the app store and approval process right into the spotlight.
Apple has absolute control of what gets into the app store and that affects company's ability to compete. For example Mozilla have been barred from deploying Fennec and now anything Google Voice is barred too. Conversely Apple has allowed both Skype and Fring to sell through the app store, affecting the overall balance of power in the consumer telephony market.
In the same way that the iTunes sync lockdown would raise questions in the EU this issue is bound to prompt calls for further investigation into the app store and its approval process.