A micro led will likely never be as cheap to manufacture as these will (simply due to complexity) nor will they be as long lasting. It’s impossible due to both physics and thermodynamics.

I will gladly bore you with the actual science if you want (I teach materials science engineering), but I’m not going to type a long long response if you’re not interested 😀.

I’ll add one caveat, because I can’t access the actual research yet (yay peer review!) if the research team did what they claim to have done, this is a multibillion dollar patent in the works!