At least some of them died because they weren't allowed to consume what they produced.

https://en.wikipedia.org/wiki/Holodomor

That is simply how socialism works. Land as a mean of production is no different from a factory, so naturally, the products created on the land belong not to the peasants (Petite Bourgeoisie), but to society as a whole.

And guess what this bourgeoisie did when they found out that the grain they produced would now become common property (they sharply reduced the amount they producing).