Just WHERE is it written in stone that construction will be formed by Penwith contractors with Penwith employees? WHERE is it written in stone that materials supplied for the contract will be provided through local companies? WHERE is it written in stone that catering and fuel and all manner of other peripheral services will be handled by local businesses?
A contract of this size will go out to a selected number of contractors with a suitable workforce and management proportion; there is no guarantee whatsoever that this will go to anyone local. Consider the plant required and quantities involved.
Of course nothing is written in stone - but Cornish contractors are able to bid for contracts/sub-contracts according to EU rules, if they lose out to lower bids from overseas (other EU) bidders at least they tried. If there is no company in Cornwall able to bid for any part, then that must be a reflection on how much Cornwall has declined in engineering and other potential over the last half century. Lack of development due to what reason? Too many local objections to developments?