Possible yes, but doable... I don't think so, it would disrupt the business scheme of all phone companies, they would make deals with any company that could make the parts needed for the blocks so they won't make them.
From every other standpoint it is a total waste of time.
They will have a hard time getting a phone manufacturer to design and build and sell individual components specially designed to run on an open source platform rather than continue to promote their own whole handsets.With how complicated and interconnected through patent sharing building phones already is, this is a non starter.
It seems a ridiculous idea to reduce waste, what happens when phonebloks 2 comes out.
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