Well, 1. and 2. is about contracts between McDonalds and their franchisees, so if a franchise owner feels unfairly harmed by this restriction, then
they can sue
McDonalds, it's not something about which Kytch should be able to sue Taylor. And, once again, it's perfectly reasonable and very common for franchise agreements to mandate certain suppliers for some products, goods and services, and the close ties don't make it problematic, it's common for some of the suppliers to be wholly owned a subsidiary of the mother company, and it's common for these suppliers to be not very good but as the shared money-maker for the franchise scheme.
There's no fundamental difference between McDonalds franchise contract saying that franchises must use only this ice cream machine and the same contract saying that franchises must make BigMacs only according to this exact recipe. If the franchise operator thinks that the BigMac recipe sucks, they don't get to change it or demand a fix - if McDonalds thinks that's good enough, they can take it or leave it and stop being a McDonalds franchise. The same is regarding McDonalds ice cream process; it may legitimately suck, but it's part of the package deal. If McDonalds wants to buy from Taylor and not from Kytch, that's their choice, effectively McDonalds (and not the franchise operator) is the customer here; and if they are a lousy customer, there are other customers to fight for - IIRC McDonalds bought 25% of Taylor machines, so there are many others out there.
And #3 is not a bad or even a neutral thing - reverse engineering other products is great, please everyone do more of it! Good features should be copied and adopted across the whole market (both in hardware and in software), that's the exact kind of competition that benefits the community; and that's a manifestation of the hacker spirit that should be celebrated, not get shamed about. While legal restrictions such as the excessive patent regime and the excessive length of copyright often prevents people from doing that, in cases where it is not prohibited, this is a good thing to do.