FWIW, Doctorow attributes the entire quoted paragraph to "Jeff", who apparently runs the microsofttaxdodge.com blog; Jeff has incentive to think Microsoft is be

FWIW, Doctorow attributes the entire quoted paragraph to "Jeff", who apparently runs the microsofttaxdodge.com blog; Jeff has incentive to think Microsoft is behind Gates Sr.'s tax proposal, as it helps his site's argument.