VK these are probably some of the worst arguments you have used in many of the discussions you participated in. You better read up on the way a government functions in an open economy. Your argument indicates a “neo-liberal” view of these matters. If that is what you want: compare continental European infrastructures, including airports, with those for instance in the USA. Take your pick.
Airports are an important part of the infrastructure of a country, especially if this country is an Island and heavily dependend on international trade. The infrastructure is the basis on which you can develop an economy. The possibilities of an economy succesfully developing and adding value to a society is highly depending on the quality and possibilities to adapt to market circumstances such as required growth.
Infrastructure and infrastructure planning is the responsibility of the government. Ultimately it’s the government that decides whether LHR is a viable long term option or something more drastic is required. Where and when is not something to be decided by the private sector.
A government has to lead the way not follow the private sector. There is more to leading a country than do what the private sector tells you.
This is not to be confused with operating an airport, this can be outsourced to third parties.
Developing an airport takes a very long time and the UK government should have had a clear plan already and this should have been communicated to all parties involved, including the public.
What is happening right now seems like a very expensive way of patching LHR up time and time again, but the real problem, lack of runways and availability of slots, won’t be addressed.
Stating that “the UK is leveraging Schiphol as its alternative airport for regional connections” is a strange argument as feeder flights are the lifeline of any major hub carrier. BA would not survive if they only had customers from within the London area.
Your argument comes down to LHR becoming an airport for the London area, the rest would be better of flying through other hubs. I am sure BA has a very different view.