If Lindsay wants to keep EN, then EN will stay. If the government doesn't approve the master plan then it will be lawyers at ten paces, and I suspect the government will lose in the courts, given that the courts would probably rule it unreasonable to allow land to be zoned for use as an airport then to prevent the land to be used for that reason. If the government wants to re-zone the land and terminate the lease, then they will owe Lindsay 99 years of lost income.
On the other side of the coin, it is now so expensive to use EN that's its value to aviation now has to be bought into question. There is no doubt about its value to Linfox.
Walrus