Another classic example is one of the old IBM line printers that had a field
installable 2x speed upgrade. The technician would come in, order everyone out
of the (leased) computer complex, then remove the speed-reducing gear :-)
So it's Microsoft's perogative to sell two versions of a product for two
different prices. The claim of monopoly discrimination (increasing returns to
concentration) would be borne out if IIS (MS's web server) ran on Workstation
*without* the same limit applied to WebSite. If the price of (Server - WS) is
greater than (any competing web server as a standalone business), that would
equally suck.
But still, network effects are contentious in anti-trust theory. MS doesn't
have a monopoly in OSes OR in Web Servers individually, but here we are
attacking the combination.
Rohit