OK, then it must be a case of "one size leg fits all". That makes for a big savings in manufacturing costs, ....... plus, it looks like it could be "stamped" out in one fell swoop, another cost savings.
One could probably buy all different sizes of tables, stands, cases and cabinets ..... all with the "same legs" on them ........ and the cases and cabinets without legs if that's the way one wanted them.