It's a fallacy that an increase in a workers productivity due to better technology or innovation *on the part of someone else* should result in an equal share in the profits of that increased productivity.

If I have a factory that makes widgets, and I pay a skilled worker to laboriously craft one widget at a time by hand, and then I invent a machine that allows unskilled workers to make tens of widgets at a time, why would those workers see any increase in pay at all? In fact, their pay would likely go down, because now I can hire unskilled labor instead of skilled craftsman.

The benefits of technology will always be exponentially unequal.