acroyear | a recall on (Disney) pogo sticks

Disney Princess and Disney/Pixar Toy Story Cruising Cool Pogo Sticks - Product Recall - Toys"R"Us Corporate:

The bottom rubber tip attached to the pogo stick frame may wear off, posing a fall hazard. Also, the end caps on the handlebars can come off, exposing sharp edges, posing a laceration hazard.

ok, this one got to me. We've known for decades that "bottom rubber tip may wear off" and "end caps can come off" for things like this. Seriously. *Decades*.

So why do we still end up with companies making these things that haven't figure out how to NOT have that happen? I realize it is a hard problem, but considering these problems existed in the 60s and the 70s, you'd think after 40 years WE'D HAVE SOLVED THEM BY NOW.

I just don't get it...