That may be how "laws" work, but it's not how society works. There's a reason why "Robin Hood" is a parable. Legally, not all theft is treated the same, either - wage theft is largely ignored compared to other kinds, despite accounting for an order of magnitude greater amount.

And for that matter, not everyone agrees what theft even is. Leftist will say that wage labor is theft, and the far right will tell you taxation is theft. It's all relative.