"Families that have been all-Microsoft will experiment using a cheaper Chromebook."
My family has four people. We have one Chromebook since one year - it is mine but everybody uses it sometimes because it is just so nice and easy to share witrh anybody.
We still bought a new Windows machine to replace the desktop of my son but that is for gaming.
But everybody in the family agrees the other Windows machines exist just for time beeing. My wife has an old desktop - she will replace that with Chromebook some day but now wanted to have a tablet for Christmas. I have a Windows machine but I never use it. Sometimes (maybe once a month) my daughter uses it instead of her iPad. I do not know why. We have two Nokia Windows phones - we are a Finnish family - but everybody agrees they suck.