It requires you to be accepted through an application (no criminal / health problems) and to 800k loan interest-free to the government for 5 years. You also need business experience and at least 1,6m$ in legally-acquired assets.
Maybe Australia also have other criteria ? I think countries on that list don't ask many questions...
Pretty bad "article" overall. It could've offered so much more information :(
They offer _residency_ visas, not citizenship. Once you are a permanent resident, you can apply for citizenship once you fulfill the residency requirements (3 years over the last 5 in the case of Canada), but the article is about countries that offer citizenship _outright_.
There are some countries where a residency visa does not allow one to do so no matter how long you spend in the country.
Normally once you have the PR, you only need to spend the required time here and pay the fees to get the full citizenship. It's pretty straight forward (Friends are in the process)