I'd argue that democratic governments use populism to stay in power in a similar way as corporations use marketing to make profit. In both cases they seek to make masses happy enough to maintain their status quo.

On a related note, if we look at corporations as nations with citizens being their employees, then actually they work in a more similar way to a government - they usually provide healthcare, define certain laws (as in, rules and dependencies within the corporation itself) and seek to make their employees happy (or else employees will go to other company). And additionally people don't get so zealously protective about their corporations as they do about nations, so maybe rather than waging wars they would choose to simply change the corporation they are in.

Well, I certainly don't say we should make a change in this direction though; it's simply a thought I find interesting, how corporations provide to their employees some of the things similarly as the government does (and sometimes provide even though the government should, but doesn't).