The post you are reporting:
Of-course we don't want to build box-houses for London's unemployed, Roger.
As for attracting high earners to relocate here, the question arises, whether such people want to sell their present house and buy one in Dover. Is there a reason why they should move away from their present residence and area of employment and live in Dover instead?
But if some people do want to move, the free market already offers ample possibilities to do so, and high earners can buy a house in Dover or any other Kentish town by simply consulting the estate agents. So it would be both pointless and peculiar for a town or District council to launch a campaign specifically to attract high earners.
Hundreds of other councils could do the same, and even attract high earners away from Dover.
So it would work both ways and might backfire.
This brings us back to the basic point, not how to encourage high earners to sell their property and move to Dover, or Hythe, or Canterbury, or Edinburgh, or Cardiff, or Aldershot, or Plymouth.... but how to find work for unemployed people.
We do have factories in East Kent, some of these are in Dover, but they don't tend to employ local people. So we have many unemployed local people, who can't invest more than their weekly JSA in the economy.
Because London's rent is so absurdly high, housing benefit for unemployed jobseekers in London is far too expensive for the State to pay. Possibly two, three or five times higher than in Dover. This is the problem the State is trying to solve by temporarily transferring the unemployed from London to Hull and elsewhere, where rent is cheaper.
Meanwhile we have enough unemployed local people in Dover District, so if more come from London, they too will be signing on in Dover and competing for the local jobs, many of which go out of principle to non-British citizens.
Attracting high earners to Dover is just talking around the whole topic.