Well then you have disdain for most machine assemblies out there because most use press aka interference fits throughout. They do have their place and without them, we would have many gas engines on the planet.

But you are quite right and Praxis is what I was referring to implicitly in my post. I believe their BB is the future. BB30 is needless and costly to manufacture due to insert molding and/or finishing machining of cup bores. PF30 is a single molded in 46.0mm hole. Shift the complexity to the BB...which isn't much complexity by comparison. The Praxis BB is simple, effective and elegant and more importantly unlike BB30...non invasive. What I meant by the next 5 years is...a collet BB will be much more the norm and likely adopted by OE bike companies and not just the aftermarket...provided they can work around the patent infringement.