Non-exclusive "racials"
They would not be racial skills if anyone could get them now would they? They are skilled designed around that race because only that race can do them. A char or norn don’t know how to create a gollom like an asura do they? An asura can’t transform into a norns spirit nor you see a charr using a seed to create a plant. So to allow every race to use any of those spells would be taking away lore of that race.