In the current economic climate, investing in the Amiga would be financial suicide. The company that owns it (or rather the name) is bankrupt and two million in debt. It has less than 10,000 users worldwide (and most of them on PC-based emulators) and so it would never bring returns matching what you'd have to spend to market it again.
The closest thing we have to an investor in the Amiga market are Genesi SARL, but they are alienated by around half of the community because they don't have the Amiga name, and to be quite honest, they don't have the spending power either.
Unless someone with major spending power (such as in the hundred millions) comes in and brings new professional developers, modern but original hardware, game company sponsorships, and advertising, and at the same time a miracle happens and all the IT super-corporations like Microsoft collapse, Amiga can't be rescued and is safely dead.