You're pushing a straw man pretty hard associating a bed in process with performance brakes then saying performance parts don't offer a street benefit, therefore bed in is of no use. Can't say I appreciate that.
Straw man? I'm just pointing out the unpopular facts. Justify your expensive brakes all you want. But unless you're running performance tires and driving on perfect pavement your tires will lose traction long before you reach the limitations of normal quality brakes (we're not talking auto-store discount brakes here). Very few people have EVER put their brakes all the way to the floor. They may think they have but they likely didn't.
Can't speak to OEMs. But every dealer I've seen has some sort of bedding process here. As do indy shops.
The process is as much for an even deposition of material as it is checking the work was done properly and verifying quality of parts. Every time I do brakes, whether it be for myself someone else's car, I take it for a test drive and beat the piss out of them. I'll hand over they keys once I'm satisfied everything works properly. Last thing I need is a call that someone ended up dead because pad material separated or something. Looking at you oh-oh-oh-ohshittyautoparts. Wouldn't have found that without a thorough test drive, or bed-in, as it's commonly referred to.
A test drive to ensure functionality is one thing, but I doubt the motivation for doing so is to "bed the brakes". It's to reduce liability by ensuring proper function.
Like I said, if you're installing ceramic there is no such thing as bedding. Ceramic doesn't even transfer to the rotors like semi-met does. And IMHO, only place semi-met belongs is on the wheels of people that like the cheap auto-store brakes or those that are buying performance brakes. Semi-met performs a bit high than ceramic but makes a dusty mess doing so. I don't care for the dusty mess so I went quality ceramic on my brakes. They stop better than the OEM brakes and I can break traction with them on dry pavement. I don't need high-end performance brakes.
That being said, the theory behind bedding brakes: Hard stops that get the rotor and pad hot transfers semi-met pad material to the surface of the rotor. The coefficient of friction between this glazed coating and the pad is slightly higher than the coefficient of friction between the pad and bare cast-iron. So you get slightly better brake performance. Why only slightly better? Well, this glaze only partially covers the rotor, the vast majority of the rotor is still exposed cast iron. If the pad formed a perfect glaze over the rotor then the cast iron would never be exposed to the pad and would therefore never wear, yet we see wear on rotors with semi-met pads still don't we? So this "glaze" can only work where it is, and that is in microscopically scattered "shotgun pattern" across the rotors surface.
Don't take this from me, look at brake manufacturers and what they say. I'm just being realistic. The truth is, stopping your vehicle can only happen as quickly as the weakest link will allow. On OE brakes the brake pad is normally the limiting factor on dry pavement but it's closely balanced with the friction of the tire on the road. That's why when you see them doing stopping distance tests the tires chirp a bit as the vehicle comes to a stop. In this case adding more braking power just makes the ABS work harder, lengthening stopping distance. I don't know how else to explain this...
I will say that people running oversize tires could likely benefit from performance brakes because of the torque difference due to the larger tires. However, in many cases it doesn't take much more brake to accomplish the task and it can ofter be accomplished by choosing a better pad material. That pad material still may not benefit from bedding...
