I also think that bodies that are destined to be stars go through earlier stages - starting out as a pile of gas and rubble, then a planet as the mass increases. Then given enough mass and rate of infalling material, it’s heated up enough by gravitational collapse to become sorta a plasma planet. As the temperature and pressure get to brown dwarf stage, the deuterium ignites, first as a few hot spots, then eventually enough to be self-sustaining. As it gains more mass, the conditions become enough to ignite the hydrogen cycle. Hence the body goes through all those stages.
We just can’t see it because of the accretion disc along with other bodies going through the building stage all within a nebula or cloud of stuff making the stars. I imagine once the cloud clears because the bodies that were born consumed most of the material, left behind are stars with planets, some brown dwarves, some interstellar planets and moons, and all kind of rocks and dust just everywhere, all going their destined pathways.