This is true of every ideology usurped so far by dictators. Kings usually just invoked divine rights, or the good old "my father was king and his father was king before him, so I shall be king after him too" as is tradition. Caesar was also a tribune of the people, yet he was ineligible, but he also used the "will of the people" as justification.
The problem is, when someone has so much power to do this, ideologies don't matter anymore, and there's no argument that can best the "will of the people", because if the will of the people is wrong, then the people are wrong too, and since they are the majority, you're screwed with your logic (and rationality).
I'm saying these, because it's important to note that communism as an abstract idea is not worse or better than any other form of government, such as feudalism, or fascism. Ideally all could work. Given an ample supply of good kings, incorruptible premier secretaries and supreme leaders, and so on.
Naturally, the problems are foreseeable, so individual power should be limited. What better way to do that than to remove even the power of wealth generation? Bam! Instant communism, again.
And this works with property rights too. Someone offers you a very good deal on a crate of gold, you buy it. It turns out it was stolen from a national bank. But reversing that transaction would violate your property rights. (How far you would have to go to make sure you're not buying contraband/bootlegged stuff? Anyone can make up an example where you have done enough yet a lot of people will suffer as a result of your gains.)