Well in principle if more people are getting concerned about overfunding this should put a downward pressure to the total amount raised. People have plenty of time to do their due diligence so at the end of the day there should be some equilibrium amount that balances concerns and hype
But we all know that crowd wisdom can be very irrational attimes, the same crowd that decided to give over $150 million to Slockit DAO. My advice here is just invest what you can afford to lose
DAO example does not apply because DAO funds could be seamlessly reconverted back to ETH (before the first allocation was made, which never happened of course). Therefore at the time people invested into the DAO (me included), there was no *commitment*. Here it's different, once you get your tez you are stuck with them for a while and there is not reversion possible of your investment like happened with the DAO. For this reason i believe tezos will raise less than the DAO