I have a OS .15 FP that still runs but is down on power. After opening it up, I discovered that there was a noticable amount of play in the piston to connecting rod wrist pin bushing. I have never seen a crank bushing wear out.
Ball bearing engines still have bushings in the connecting rod upper and lower end.

There are a lot of applications where bushing bearings are the preferred bearing. Advantages include quietness and an almost indefinte lifespan. The shaft does not rub on the bushing, it floats on a thin layer of oil once the shaft starts turning. It's not uncommon to see still in spec bearing bushings in car engines that have 300,000+ miles on them.