Not sure i'm fully understanding your point, are you saying that the large AI companies will create AIs that will create technologies beyond what everyone else is capable of, thus outcompeting everyone, effectively monopolizing every market and from there basically become the umbrella corporation?

I would be very impressed if anyone managed to make an AI capable of innovation to that degree, but sure, in that case we would have to fall back on something like government oversight and regulations to keep the companies in check i suppose

It's ai and cheaper healthcare or no ai and spiraling costs to healthcare - especially with falling birthrate putting a burden on the system.

AI healthcare tools are already making it easier to provide healthcare, I'm in the uk so it's different math who benefits but tools for early detection of tumors not only cuts costs but increases survivability too, and its only one of many similar tech already in use.

Akinator style triage could save huge sums and many lives, especially in underserved areas - as could rapid first aid advice, we have a service for non-emergency medical advice, they basically tell you if you need to go to a&e, the doctor, or wait it out - it's helped allocate resources and save lives in cases where people would have waited out something that needs urgent care. Having your phone able to respond to 'my arm feels funny' by asking a series of questions that determines the medically correct response could be a real life saver 'alexia I've fallen and can't get up' has already save people's elderly parents lives 'clippy why is there blood in my poop' or 'Hey Google, does this mole look weird' will save even more.

Medical admin is a huge overhead, having a 24/7 running infinite instances of medically trained clerical staff would be a game changer - being able to call and say 'this is the new situation' and get appointments changed or processes started would be huge.

Further down the line we're looking at being able to get basic tests done without needing a trained doctor or nurse to do it, decreasing their workload will allow them to provide better care where it's needed - a machine able to take blood and run tests on it then update the GP with results as soon as they're done would cut costs and wasted time - especially if the system is trained with various sensors to perform healthchecks of the patient while taking blood, it's a complex problem to spot things out of the ordinary for a patient but one ai could be much better at than humans, especially rover worked humans.

As for them owning everything that can only happen if the anti ai people continue to support stronger copyright protections against training, if we agreed that training ai is a common good and information should be fair use over copyright then any government, NGO, charity, or open source crazy could train their own - It's like electricity, Edison made huge progress and cornered the market but once the principles are understood anyone can use them so as tech increased it became increasingly easy for anyone to fabricate a thermopile or turbine so there isn't a monopoly on electricity, there are companies who have local monopolies by cornering markets but anyone can make an off grid system with cheap bits from eBay.