Isn't the ideal thing here to let employers compete with higher and higher salaries for visas rather than silly things like luck-lotteries or country-of-origin?

Isn't the ideal thing here to let employers compete with higher and higher salaries for visas rather than silly things like luck-lotteries or country-of-origin? This ensure that the smartest foreigners come here, and stay here. This also ensures that we attract high quality talent. It removes the uncertainty immigrants face (and that companies face.)