Nicholas Provenzo has this to say about Mars missions, etc.

In Capitalism Magazine:

It’s also interesting that for all the prattling about competition being so important and antitrust being the Magna Charta of free enterprise, few take issue with the government’s monopoly in space. What businessman could hope to compete with the government lifting payloads into space? How high is the regulatory burden placed on vehicles built and launched by private enterprise? Where the justice in a tax-fed government agency deciding what is to be the priority in mankind’s development of space?

But perhaps the cruelest aspect of the government’s involvement in space is the fate of the scientists and engineers who do produce incredible technological achievements. The men and women who make spaceflight possible are heroic. Yet as the Apollo space program showed, when these engineers and scientists achieve all that is asked of them, they will see their budgets slashed and their achievements ignored. I say the work of these heroes ought not to hinge on the political whims of the day.