I don't think it was realistic for a net spend on transfers of around 70 - 80 mill over 4 years to expect to get a club from 16h to any higher than 6th. During the three years we finished 6th we had the 8th, 6th and 6th highest wage bill. I therefore think given the amount we spent and the fact we had no higher than the sixth highest wage bill then a 6th place finish was about as much as we could expect. We certainly didn't spend enough to expect to finish above Man Utd, Arsenal, Chelsea, Liverpool, Spurs and after 2009 Man City.
I don't care who the manager is, and I rate Lambert very highly, but we are not going to again become a consistent top 6 side without substantial investment and again having a wage bill that reflects a club finishing in the top 6. As said previously you may get the odd season of success, you may as any club can with a little bit of luck along the way win a cup, but you will not maintain it without the right level of investment and accept that you will have to have one of the top half dozen wage bills in the country if you want to mix it amongst the top 6 season after season.
What about the net spends of Everton? Newcastle? Clubs who have financial restrictions and performed very well last year, Moyes even got 4th one year, was his wage bill 4th highest in the league? Newcastle came within a whisker last year of finishing ahead of both Arsenal & Tottenham & managed to finish ahead of Chelsea & Liverpool. What was their wage budget? Now look at the other end of the spectrum, had all 3 relegated teams the lowest wage budgets and net spends in the Premiership? I'd sincerely doubt it. Had we the 16th lowest wage bill? No we didnt what we did have was a shit manager, along with the rest of the other teams that went down. (Coyle a possible exception, was unlucky with injuries.) Look at Arsenals net spend, they have spent less money on players than they have received since the Premiership. Produced some very good players, and bought some ridiculous bargains, what was RVP £3.75mil. Spending money by no means guarentees success.