How? Conservatives appear unwilling to enter the fields and major in the subjects that would facilitate this. Instead they just mock those fields and majors while patting themselves on the back for starting their own businesses or "having a real job".
You make a good point, and the internet revolution really didn’t help either as most significant internet portals are controlled by progressives.
There is a lot going on in this area, and what you mention is some of it. Yes, I think Liberals have a natural predisposition to go into those vocations, while conservatives tend to prefer more tangible sort of work like providing goods and services, but some of the lopsidedness of the industry is the result of deliberate efforts to block conservatives entry into those jobs.
They don't want us there, and they will go to great lengths to keep us out. Even so, a few occasionally sneak in, and others see the light and become conservative after they've been in the industry awhile. (Ronald Reagan, Charleton Heston, etc.)
Roger Simon (former Movie industry writer who is now over at PJMedia) was soliciting conservative writers and actors to get in contact with him about working on future projects to produce entertainment. Glenn Reynolds has been working quite a lot to make PJMedia into something more than an internet phenomena. Glenn Beck has been trying to get his Blaze network going, and Bill Whittle produces some pretty good video commentary, as do others.
What do we do to improve this? Well, I think the first thing we need to do is to make as many people as possible aware of the problem, and then convince them that something needs to be done about it.
After that, perhaps we can come up with enough brainpower and money to take some good stabs at solving it.