I agree that Venture Capital as we know it today will not survive a BTC Standard.

That being said, there will always be people who make riskier than average investments for a higher return. You are right in saying there are not many investments that deliver >25% in annual returns, which is why many start-ups crash and burn. 

That doesn't contradict that new companies that provide value to the market will tend to grow at a faster rate, in the early years, than well established companies. Percent growth is larger when starting from nothing. The concept of Venture Capitalism is not the same as the practice of pump and dump schemes.

If investors want to be risky and be a part owner in something speculative and doesn't have the cash flow to back it, let them. This is assuming accurate and truthful financial information is provided (not fraudulent).

Are you positing that with a BTC Standard there will no longer be investors with a preference for high risk? There will no longer be Investors and Entrepreneurs who want to create something the market didn't know they wanted?