this has far more potential
If immersive efefct i what you'tre going for, the potential for this technique is in fact severly limited.
First let's strip away some marketing mumbo jumbo:
The "projecting directly onto the retina" pitch is bull.
Unless you want to venture into eye surgery, you can't bypass the optics of the cornea etc ("lazers" or no "lazers"), so any light looking like it comes from a particular direction has to actually arrive from roughly that direction. It follows that and some part of the chain has to physically cover at least as much of the field of view as it looks like to the viewer. If you're close enough to the cornea that doesn't have to be very big, but unless you're willing to fix your gaze in a single direction and shave your eyelashes, there are practical limits to how far this goes.
The "no screen" pitch is also bull:
The DLP-chip is a screen just fine, just a really small, really bright, reflective one. Optics can make it look bigger, but this approach doesn't really scale to anything beyond a binocular-like FOV as long as the screen/chip remains stationary.
Either you need a bigger screen, or you need the small screen to follow your pupil around as your eyes move (really fast).
The latter is likely to take longer to become practical than the surgical option, so for the next few decades, it's going to be external screens of some sort for most of us.
That said, doubly curved displays, more advanced optics and futher miniaturisation can greatly improve FOV, size and quality compared to the cluncky rigs we see todaty, but don't expect anything beyond "really clunky ski goggles", even in the long term.