Seems what you describe could be done through a BLE accessory that straps to the handlebar or at most an aftermarket handlebar with LEDs/sensors integrated, which talks to a phone app.

I'm part of the "athlete" market segment who is happy spending $2k on a "dumb" road bike and I also commuted on that dumb bike every day through the city.

The same applies to a power meter - if I want to know my watts I'd rather buy a PowerTap hub or crank and put it on the bike I want rather than having to buy a whole bike with it permanently integrated.

I wonder if, instead of building the whole bicycle you couldn't do great things by building awesome aftermarket components (e.g. try to be Anker, not Apple.)

That said, I know it's easy to be a naysayer, and I wish anyone who's working to innovate the cycling industry all the best! (Lots of <3 to Strava, Garmin & Di2)