Good point. I split the eBooks I buy between Kindle, Google Books, and Apple iBooks. I do this to not put all my digital purchases in one basket, support competition, and sometimes take advantage of sales. It is a nuisance.

But, even though you make a good point, I disagree in the sense that I would like to see other services like Vimeo gain market share to balance things out. Trouble is, it is difficult for other services to compete with ‘free.’