The laws of nature aside, judging from the artist's conception of that ship, the laws of economics will put the big kibosh on it.
It would very likely bankrupt the entire planet, now and in any foreseeable future, to set up and maintain just the infrastructure necessary to build it in zero G, forget altogether about the actual construction costs.
The new Great Equalizer is the SEND button.
In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire
