Don't you think mainnet is already priced and current Eos market cap is overvalued? It is somewhat near to Ripple or Bitcoin Cash. I do not find that realistic to be high price even before mainnet. There is no logic in the market anyway
The logic is buy the rumor, sell the news. Since the rumor has been bought for a whole year, the only logical followup would be a significant dump after the launch. Many people are put off by their ico style, but I quite frankly like it. If they put some of the massive amounts of money they got in the ico towards creating something akin to the ethereum enterprise alliance, I wouldn't say it's that overvalued. Might even give eth a run for its money.