If you're saying that the one who bought the tool and the worker who uses the tool should profit equally from the tool, I might agree with that. (I'm not sure; I'd have to think about it some more, but it's not a clearly wrong position.)
Now here's someone richer than that. He buys two of the tools. If you say he should get as much as the worker for the first tool, and as much as the worker for the second tool, again I might agree. If you say he only gets as much as any one worker, no matter how many tools he buys, I disagree. I even think that you should disagree, for selfish reasons. We need these people to buy the tools for the overall growth of productivity. If we have to bribe them with returns on their investment, so be it. (The alternative is that the rich person only buys one tool, and then stops, because they would get nothing from buying the second tool. That may feel good, in that it doesn't let the rich earn more than anyone else, but it doesn't help grow the economy. And growing the economy is the only way that there's actually more for people, as opposed to simply dividing the existing pie in a different way.)
How that is to be accomplished is.. complex. But that’s definitely the goal. But let’s not assume that we need some class of people who have the privilege of being the owners of capital.