Why is it generally good for businesses if their projects end on time and with only a little money left in the budget? a)because it indicates that their managers are competent at estimating budgets and maintaining schedules. b)because if you finish early and with budget left over, the company will cut back on your next project. c)because otherwise the government will think they are hiding revenue. d)because it means their projects were over allocated.

Google started as one of many internet search engines, amazon started as an online book seller, and ebay began as a site where people could sell used personal items in auctions. these firms have grown to be so large and dominant that they are facing antitrust scrutiny from competition regulators in the us and elsewhere. did these online giants grow by fairly beating competition, or did they use unfair advantages? are there any clouds on the horizon for these firms -- could they face diseconomies of scale or diseconomies of scope as they continue to grow? if so, what factors may limit their continued growth?