Machine learning susceptibility?

Is the whole artificial intelligence field too young to be useful in the market without intense specialization? The only real success I’ve seen from the use of ML is from people who have intensely researched the dynamics of different ML models and are skillful enough to implement them.

I’m not saying ML should be easy, but rather I’m asking if human intelligence is simply better than ML currently.

This could be very biased but I’ve tried machine learning a bit and to get anything better than linear regression is extremely hard, or shitty delayed SMA Strategies.

What do you guys think?