No, a business investment visa is an invitation to come over and set up a minimum viable, likely-not-profitable 'business' for the duration it takes to satisfy requirements. The government gets peanuts out of it, the 'investors' waste years of their lives playing pretend.

It's a shit show. Much better to just charge cash, speed up the processing and let in those who actually think they can make money despite the steep cost of entry. And if they fail anyway - reserve a small portion of the ticket price to put them on the dole.

Yep. I believe you can also become an Australian permanent resident and then citizen through that visa. You just need a spare 5 to 15 million dollars AUD to invest, depending :). IIRC Steve Wozniak went for it or at least was considering it. Details here: https://www.border.gov.au/Lega/Lega/Form/Immi-FAQs/what-is-t...