I mean those other places also don't have oxygen rich environments though either that consume and destroy hydrocarbons or life forms (that we know of) to cataly

I mean those other places also don't have oxygen rich environments though either that consume and destroy hydrocarbons or life forms (that we know of) to catalyze and consume it. If they both existed in the same environment with any abundance they would quickly (geologically) destroy each other until one was nearly depleted. If hydrocarbons on earth weren't buried under tons of rock to keep oxygen and life away it wouldn't exist in meaningful amounts, and much of it got buried in oxygenless enviroments because of life itself. Keep in mind the Earth has had atleast a billion years of time just oxidizing all the elements and chemicals anywhere near or on the surface of the earth or oceans.