I agree that ICOs are very very interesting financial and technological tool, your statements are great about them, here are some complementary info:

1 .- About openness in opportunity to invest:

Being open to anybody with a minimum amount of money and has access to internet, for that ICOs are great, and actually that have existed in projects like crowd sourcing platforms, for example KickStarter, Here you can check the FAQs of the platform.

2 .- Spread the seeds of growth around the world.

Absolutely, having investors, from tiny to small to medium and even large, around the world, will give your product or service the exposure to growth in their own communities, where those investors have their personal and business relationships. That will be for free ! and with advocates that will have incentives to contribute and improve every little aspect of your service, so this is a great value added by this ICO model.

3 .- Exposure to a wider audience, more chances of success.

And yes, a wider audience of possible investors gives increases your chances of finding more suited-like minded people that wishes to put their trust on you.

Thanks for pointing out this very basic and yet interesting and complex questions about ICOs. Great post.

If you like to keep sharing ideas about the technology and business about a cryptocurrency, please follow @ggorwell and myself also @sono.arquetip.