I won't call this evil but its certainly not a good trend even if Google's surface intentions are benign and even altruistic.
Google wants all the data in their system, in their format and for you to only use their tools. It's a big roach motel. Granted the company is solvent and isn't going anywhere but it appears that once you move your stuff into the Google cloud you can only work with it through their API/interface. I'd much rather see this data being offered and hosted in industry standard formats, run with whatever tool you want on that data because its accessible through a file system paradigm - native client, WxS services, mapreduce, whatever.