Profit is simply value extracted from workers.
As opposed to the arbitrage of the subjective preferences of multiple actors. The modern interpretation of how value can just appear.
Those workers who got a return on capital delayed consumption now, for more consumption later. That's a preference. I don't think that's a bad thing. But you can see how over a long time it can generate massive inequality.
But I don't think the fundamental mechanisms of how this occured is particularly exploitive.
Where as LTV pretty much just says it your just stealing value.