The other problem is that big companies can take a loss and starve out any competition. They already make a ton of money from various monopolies. And they do not have the distraction of needing to find funding continuously. They can just keep selling these services at a loss until they’re the only ones left. That’s leaving aside the advantages they have elsewhere - like all the data only they can access for training. For example, it is unfair that Google can use YouTube data, but no one else can. How can that be fair competition? And they can also survive copyright lawsuits with their money. And so on.