High GDP does not in itself result in high employment. It is simply a measure of wealth produced in the measured economy.

If I owned a fully-robotic factory that produced all the goods this country consumed, unemployment would be at 100%, but GDP would be the same (Because the amount of wealth produced would be the same as it is today.)

Capitalists aren't going to share their profit until we take it from them, either through taxes[1], or, ah, 'land reform'[2].

[1] The carrot.

[2] The stick.