You might also destroy a lot of the resources on entry. Also: Where do you land it? It is not so easy to steer these things and if it lands on someone else's land you might even have to pay them for damages...
EarMaster
To be honest: I don't think that's much of a problem (unless...). The pathogens on earth are all adapted to attack (if you want to use this verb on a cellular level) us and others on earth. They would most likely not pose a threat to any other lifeforms that have evolved on other planets, unless our way of evolution is the only one which is able to produce life. And that is a big unless, because apart from the panspermia theory (life came to us with a meteor) there is no reason to assume that life has to work the same way it does for us.
I don't think so. Of course it's hard to predict what Europe will look like in 100 years, but I'd like to image the EU more as a service provider for its member states. Maybe the military will be combined and the economy is already very much linked together which will increase. But I don't think the member states will cease to exist as sovereign nations. Europe is far more diverse not only in language but also in culture. That is in my opinion a strong feature of the union as it is a union in diversity.
But these areas aren't free. There are people or organizations (governments) owning these lands. They will want to have at least a non significant amount of your profits. You would have to redirect the asteroid with some precision and it would take a lot of resources to do so. You will loose 50% to 90% of the asteroids mass on atmospheric entry.
The redirection alone will cost you several billions and to get your money back the asteroid would have to be of a certain size so it's impact will have the effect of several megatons TNT (equivalent of hundreds of Hiroshima bombs). It will create a several hundred meter wide crater and have a much bigger blast radius.
I don't think we should give Elon Musk any stupid ideas...