Every other advancement in understanding relatively quickly becomes highly reproducible - someone struggles to figure out how to make a lightbulb work, then woosh, anyone can test that lightbulbs work.

A lot of the psychic stuff - telportation, telekensis, remote viewing etc doesn't follow this. Even worse, in many cases it violates well understood laws of physics etc. Even worse, in contract to someone like bill gates who did some cool software stuff, we don't have example of even one psychic using their powers to fortell the future flaunting and demonstrating their powers and become rich and wealthy.

Out of 5 billion people - not one.

"someone struggles to figure out how to make a lightbulb work, then woosh, anyone can test that lightbulbs work."

That's exactly what you can do with remote viewing: test that it works for yourself.

It seems like you're assuming that it is possible to use such powers for base and counter-life purposes like amassing wealth or that anyone that has reached such a subtle level of consciousness would even care about being wealthy.

What can you do (remote viewing-wise)?

Me, personally, or as a discipline? As a discipline, remote viewing allows the practitioner to gather details about a remote subject (anything in the universe of which you can become aware) which is unavailable to the five senses due to distance, time, or obfuscation. For example, the CIA would use it to gather details about remote bases that they observe on satellite images and such.

Personally, I've been able to identify basic blind targets (from a target pool such as https://intuitivespecialists.com/target-pool/) and started training in earnest, but soon abandoned it as an egoic pursuit in order to focus my attention on raising my consciousness through traditional spiritual practices (meditation, psychadelics, self-inquiry, lucid dreaming, etc).

There is a lot of fun that can happen when you've silenced your mind, sit still, and close your eyes for a few hours. :)

Doing it != success

So if every person were able to successfully do this but science can't explain it, what do you call that?

A frontier of science.

Exactly!

The fact there is a boundary between what is reliably and repeatedly observed in reality, and what science can explain means we need more people doing experiments on themselves to give scientists more data. If everyone tried enough Remote Viewing to have success (not that much work) the materialist paradigm would crumble.