It is estimated that trees have more staminate inflorescences than pistillate ones. Why?

The stamens produce pollen, and the pistils receive pollen. Many trees are pollinated not only by insects, but also by the wind. To do this, you need the maximum amount of pollen, so that there are great chances to pollinate as many pistils as possible. That is why trees have more staminate inflorescences. But even ordinary flowers have more stamens than pistils. Sometimes one flower contains a pistil and stamens. This is to increase the chance of pollination. But this is characteristic of specific plant species, and does not occur randomly.