PBS:
I disagree with the whole theory: "investors won't find you, no matter how good you are".
When you say "this or that manager has been in business for 10 years, great track record and still stuck at 1M AUM", it means that manager is NOT THAT GOOD!
You see, investors do not judge a manager just by x% returns a year, there is a complex equation and a lot of parameters to evaluate in a manager you want to invest in (I work in the industry, I am a portfolio manager), but if you do have a "product" that can fit in somebody's portfolio, then you can find the investors, it's not going to be easy, but nothing is easy in this business. You don't make a lot of money with something easy.
That's point 1) to reflect on.
Point 2) is the following: what is your % return a year? Can you make consistently =>50% a year and scale? (scale means that you will be able to scale either your strategy or add more strategies in your portfolio as the AUM grows and after that you will keep returning =>50% a year, every single year).
If you can do that, you will be a billionaire in 20 years, simple math. Why bother with clients or prop business of any kind?