If you perform well and have decent bargaining power, you would not be in the majority. The people who have the most to gain from a union (people who have low individual bargaining power) would likely be the most vocal and involved in the organization.
These desires are at odds. Statistically, the majority would likely always prefer the latter, since the former assumes a poor majority and a rich minority.
There's some values that gets closer to a combination of these, such as going with the former, but banning inheritance (or indirect form of it). Effectively reseting the playing field every once in a while. Or focusing on increasing the minimum, but keeping the distribution like in the former. Like with universal minimum income for example.