Protestants, specifically Calvinists, believe that 'idle hands are the devil's workshop', and hard work is the only way to get to heaven. This work ethic demands compensation for the work completed, and creates a competitive system. The harder you work, the more you'll receive for your work. These concepts mirror those of capitalism, creating a religious argument for avoiding the teachings of his contemporary, Karl Marx. This system, however, is not necessarily fair, as Weber found out in his native Germany.
Favoritism runs rampant, preventing some from participating.
Max Weber sought a means to make capitalism fair. To maintain the liberty of the governed, explicit rules and guidelines must be in place to hold the government in check. At the same time, these rules and guidelines can help a private venture navigate the system. Weber's goal was to eliminate such nepotism and allow all qualified people an opportunity to compete for positions. The absolute chain of command in a bureaucracy creates, in theory, an innate fairness.