I am a long-time user of iGoogle too, but I can understand their logic. It's not just the cost of updates and support, but the opportunity cost of encouraging people to hang onto antiquated tools instead of moving to newer ones that are more integrated and profitable. They could offer to charge for some of the services to offset the lost revenue, but Google prefers to offer as much as they can free (ad supported), and given that there are better alternatives already out there, would seem a little silly.