Bitcoiners demand a lot more from their investment platforms now than in the beginning.  Many scams have been pulled, security breaches (of a technical and social nature), incorrect calculations involving money, regulatory issues (including countless seized accounts), etc.

Everything you do will be scrutinized, from your code, to your jurisdiction of registration, to your legal compliance, etc.

Finally, even after you dot your t's and cross your i's you have to get people to trust you enough to hand over money to you.  And if you are hoping to stabilize bitcoin, you are talking a lot of money.

It's not impossible, but good luck.  You will need a fair share to make it.  But, as they say, the harder you work, the luckier you get.