I do not think it will happen although it is a noble thought..there is a degree of selfless ness involved in doing so and I think even if the governement resolves to do so ...there will be many opposed to the idea as that land could be used for buildings..factories...malls...industires...homes...garbage dumps and what not....
The government can only do so much and also land is at a premium these days. It's not like 100 years ago when land was everywhere. The buildout is eating up precious space and land and it will not end anytime soon.
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