It /would/ make sense for Google. Think about how many customers Akamai has and the business they're in -- Google probably really wants a part of that.
Also, how would it make sense for Apple or Facebook to acquire Akamai? Apple's in the computer and mobile devices business (and has its own datacentre for iCloud to worry about), and Facebook has no use for Akamai outside of the services it currently receives as a customer. It would be stupid for either company to consider buying it at this point.
I'm not advocating that anyone should be buying it, only that it makes more sense for someone who doesn't already have their own massive CDN. Apple and Facebook are just the first two major Akamai customers that came to mind.
Also, how would it make sense for Apple or Facebook to acquire Akamai? Apple's in the computer and mobile devices business (and has its own datacentre for iCloud to worry about), and Facebook has no use for Akamai outside of the services it currently receives as a customer. It would be stupid for either company to consider buying it at this point.
Just my opinion.