And posing an even bigger problem: The U.K. retail market is now saturated to the point that Tesco can no longer roll out new stores like it used to.

FORBES

"In certain countries, particularly the United States and Western Europe, Facebook has actually reached a point where it appears they've saturated the market, " said Justin Smith, founder of Inside Facebook, which offers news and market research on the social networking giant.

CNN: Who in the world isn't on Facebook?

On the down side, opponents point out that the A1 motorway and the TGV line are already saturated, so new parallel services will have to be built - adding to the nine billion euros that the airport will cost.

BBC: Paris plans third airport

But the sticking-point appears to be the Twenty20 competition after a summer where players faced a saturated fixture list which many found hard to swallow.

BBC: County schedule for 2011 delayed after disagreement