True, though routers with 100G interfaces do not have a lot of buffer space. But most ISP's make sure that isn't happening as it its pretty bad for their custom

True, though routers with 100G interfaces do not have a lot of buffer space. But most ISP's make sure that isn't happening as it its pretty bad for their customers experience. I know some ISP's do not put enough effort into that at all but every single one I worked for did (Europe). In this case Google can put effort into direct peering relationships to make sure that their customers have a good experience.