I think it's too early for real 1 billion ICO because the technology is not proven yet. Are some of these companies currently potentially worth over a billion? Potentially. We need to see actual products and real use cases, otherwise its all smoke and mirrors.
status, bancor, BAT these type of icos caused a big crash because they raised too much money too fast. If there was real oversight then people wouldn't have lost so much value When the ICO tanked
Swarm.fund have neatly designed their token sale to prevent these types of crashes, by implementing a drip liquidity provision where tokens are received in 1/8th tranches every 42 days. So huge hedge fund prebuys designed to crash the market and elicit cheap tokens from the weak hands would need to be 8x larger that normal to affect the public secondary markets. In addition,
www.Swarm.fund already have a product and real use cases where partners funds are waiting to have capital deployed to them immediately... launching the foundations income stream almost immediately.