Chelsea are the third highest point scorers in the Premier League history behind man u and Arsenal, if any teams are to make the step up to compete with these two and they have the opportunity they have to spend big to catch up which they have done, my guess is Chelsea will not buy again this year but Man U may have to as will Arsenal.
Abramovich took over Chelsea in June 2003,who had already finished 3rd in the league, nearly eight and a half years ago Des, so it wasn't 'all at once'