Or how is this any different than a bank loan, If the VC doesn't shoulder the risks that come with these kind of projects I wonder what is the value they add.
People might as well borrow the money on loan.
Seed round funding usually uses a convertible note. Assuming the VC round is a priced round, the seed round investors are treated as if they had put in money during the price round.
Thus they would have same class of stock as the VC investors, with the same liquidation preferences.
Further rounds of investment normally means the company is successful and growing. It also means that professional investors think the investment is a good deal, so as an early stage investor your best bet is generally to stay on the bandwagon.
In the case of Wattage, the company is going bankrupt, so as an investor you are going to be getting between 0 - 100% of your money back. So it seems like the founders tried to get that closer to 100% so there wouldn't be any negative feelings. But if you are an investor in a successful and growing company, getting your money back is not a good return.
An accredited investor is "someone whose net worth exceeds $1M not including their primary residence." The vast majority of people are not accredited investors because they cannot use their house as part of their net worth.
This is not your extended family giving you a $500 or $1000 to pursue your dream. These are wealthy people who know what they are doing, and are putting in several thousand if not tens of thousands of dollars each.