Probably easier for Canada and the US and the Nordic countries to protect these reintroduced species than some of the more desperate and developing areas of the world. Russia, well I'm not sure. They'd probably benefit the most from the reintroduction of these species but I'm not familiar enough with Russian attitudes towards this sort of project.

It would be amazing to be able to see the megafauna in the wild though, along with protecting the wildlife we currently have.