A realization/question?

have you guys ever considered this:

What is the purpose of Christian life? Simple answer: to bring glory to God.

Now, consider this:
Many Christians will have their beliefs affected greatly by the type of music they listen to, whether those be hymns, CCM, contemporary worship, or whatever else. Also, many are similarly affected by Christian books, such as those by Joel Osteen, John Piper, Joyce Meyer, or Eugene Peterson.

Who is in charge of what music gets released, or what books get printed, or sold? As far as I can tell, secular companies and groups will determine what gets released or sold. What is their motivation? One word: profit.

No one can serve two masters. Either he will hate the one and love the other, or he will be devoted to the one and despise the other. You cannot serve both God and Money. Matt. 6:24

Now, how should we as Christians react to this? How are we to respond to the facts that Christians will have their beliefs and faith greatly affected by Christian books, music, and whatnot; while it is also the case that these things are controlled by worldly corporations, focused on profit?

Personally, I don't want to base my beliefs off of Joel Osteen or John Piper or Tim Hughes or Relient K or whoever just because these people write books and make music that sells really well. Rather, I want to have influences from people who are focused on glorifying God and on equipping others to glorify God. But, as it stands, pretty much the only people who will get heard are the ones who the corporations think will sell well.

What is to be done? Should anything be done? Can anything be done?