What no Google purchase of Skype?

It seems to me that when Google moved into voice messaging it should have just bought Skype. Was it possible that they tried and Skype was too expensive? I can't see that there is really anything that Skype doesn't have - an independent provider of messaging, voice conferencing, and with international telecom tie ins, plus they have a dedicated and very substantial customer base world wide. Seems ideal for a Google aquisition but instead they went it alone. Hmmmm. What the Google are they up to? Only time will tell.