You'll note the government chose 2001, after
the giant tech bubble of the late 1990s had imploded, as its starting point, thereby overlooking a period when the biggest companies in the land were all tech firms.
This has some observers asking if we're not seeing something resembling the 1990s
tech bubble, when valuations ballooned, a few major
tech giants led the way, and companies with no prospects to make money went public.