In a fair, free market, ideally new and emergent companies should be able to compete with larger firms. Furthermore, if the products and services they promote are superior to those provided by existing companies, then they should propel the state of the art forward, creating a better solution for everyone. Unfortunately, this requires that the legal system actually work the way it should. Considering that judges seem to simply dismiss many cases of abuse committed by the TSA, yeah, corruption in general is the real problem. But then, there are those who would tell you that corporations are people, too...
The Libertarian viewpoint on environmental issues revolves around the concept of property rights. If a company does something to damage your property, such as by means of pollution, then they must find an alternate solution or compensate you for damages done. Personally, I would advocate creating an agency similar to NASA, but with respect to the science of advancing the state of energy technology. I would like to think such an organization would do everything the EPA ought to do, while cutting out the crap it actually does.