It kind of depends what you mean by make your money. You can certainly achieve good gains based on continued development and adoption a niche of privacy-focused individuals, private store of wealth, certain niche markets that require decentralized payments, etc. But the enormous gains that come with even realistic prospects for mainstream adoption of any crypto won't come as long as there is no perception of there being any need for it. Of course, if that perception does occur, it will probably be too late to get in cheap...