Colonize Mars, build a utopia there for everyone who wants it, pay for tickets to the red planet for those interested, build an economy there, and grow potatoes.
But in general, is it really possible to wrap Mars in wire, run an electric current through it, and create a magnetic field there that is the same as on Earth? You also need a gravity of 1 g, otherwise it is harmful to terrestrial organisms accustomed to Earth's gravity. Of course, it can be increased by somehow increasing the mass of the planet, but that seems utopian.