ICO raising companies are generally a profit oriented company intended to invest the raised money for profit giving sectors.
In case of Ethereum it was selling of premined coins for the development of the community as the coin is still mine-able.
Foundations like Bitcoin/Ethereum foundations are non profit organisation and are not the sole authority about any coins.
It's the user who decide where to head. As, these foundations have the pioneering people, more user are likely to follow its decision.
Similar was the case when the orginal Ethereum blockchain support community renamed themselves the Ethereum classic while the new chain supported by the foundation became the Ethereum.