If researcher have to pay, specially non-commercial basic research as in Stanford, it would be easier for them just to buy cloud computing at Amazon or Google and don't need to deal with donors.

The initial intention of F@H was and still is: volunteering contribution to science.

Now that coins come into the picture is new, but the researcher can't pump their (public grants) money into those "outside" Eco systems. I could imagine they loose the grants as income. The value impression must come from the coin Eco system.