I do think given time, AI can improve to the level that it can do nearly all of the same things junior level people in many different sectors can.
The problem and unfortunate thing for companies I forsee is that it can't turn juniors into seniors if the AI "replaces" juniors, which means that company will run out of seniors with retirement or will have to pay piles and piles of cash for people just to hire the few non-AI people left with industry knowledge to babysit the AIs.