No I'm referring to the products that Apple will stop/won't make due to having to give access to competitors. Will there be a more innovative company who are permitted to keep the technology to themselves spring up to replace Apple holding that spot?
So you're saying that if people could compare Apple's products to competitors then they would find out that Apple can't make a better product so they (Apple) wouldn't bother to make one in the first place? That seems both nonsensical and counter to why most people profess to love Apple products on these forums, we think the products are better in enough ways to choose them over other products.
Another weird conclusion you seem to be drawing is that Apple will compete so poorly with others that it won't make enough money to recoup any investment in these new products. If this is true, then Apple is already such a poor innovator and creator that again, why should it keep its system locked down so that we are stuck with (according to you) worse Apple products?
If Apple products are good enough to win customers they have nothing to fear, if they aren't then they should open up the platform and give us access to the better products of its competitors.
At the minute Apple can make all the good products they do because they don't need to worry about what the competition are doing. In the future Apple will have to plan and make products not only considering their own customers, but the customers of competing products. That is likely to change Apple into a less innovative company.
No they won't. This is not what is being required. What is being required is that when Apple builds an API to let its own products do something they have to open up that API. They don't need to build APIs to competitors standards, nor do they need to keep competitors in mind when building the APIs. They don't need to build the Watch to iPhone APIs to handle Galaxy watches, they just need to open the APIs they do build (which Galaxy could then use too).
As I explained above, if Apple is making great products it has nothing to fear from doing this.
Is there another company ready to step in who can provide us with what Apple used to be before being banned by regulation? Because I'd be very interested in their products.
Apple isn't being banned from doing its standard vertical integrated stuff, it is merely being required to allow other companies to use the same APIs it uses itself. That doesn't stop Apple from building a vertically integrated product.