So many good points on this thread!
Being a noob at this and thinking about this very thing daily at times consumes me but not really scam/not scam level but more in a how can it be done better level. I think there are some established investors who may be thinking the same thing (going to visit one this week). This is great for someone like me who wants to work at this but has little starting capital to do it with. Let's change the paradigm.
It's to easy to just say they are all scams. There are too many people on here that have spent the money and make it back 10 fold. It's more about what level you are at as an investor and if you are taking a calculated risk in choosing someone who has a well-proven track record or are you going to just be just risky and go with someone with good marketing and hope for the best. If you have the money and the motivation to make it work, then great! Follow that path.
If you are looking into or are new at Real Estate (much like anything) and short on funds then gain all the free knowledge you can, focus on what you want to do or be a part of, be honest with yourself and gauge your strengths and acknowledge your weaknesses and then put yourself out there.
Network and find people who you can provide value to and not be a drain on their resources. If you have something established investors want (Money to invest, Skills they don't currently have, A network of people they don't know) you can provide them value and in turn, they will be willing (in most cases) to give you 2 of their most precious resources, Time and Knowledge. You need to have focus and clear goals before you do this though so get yourself and your attributes in order first. This will be a slower path to success than going with a paid mentor/guru from the start but it could turn out to be stronger in the end.
At some point when you have built the funds, you may feel the need to pay to jump to the next level. Now however if you have worked hard and built a network of people in Real Estate by the value you have provided then you will have a lot better understanding of who you want to invest your money with which is better than the dart at the dartboard logic that so many people seem to use when it comes to spending money on Real Estate education.
I myself am trying to take this path and I can tell you it's not easy and taking action is easier said than done especially when you are talking Multi-family and Syndication. I feel like I am making some progress now but it has taken time and focus.
Just another 2 cents from another wannabe investor