My question is, why do these companies run ICO? Is there any need for it actually? Why don't they use bitcoin if they want to enter the cryptocurrency world?
Exposure. If you ever take a look at kickstarter sites and crypto industry.
Crypto is insane. If your project is promising, you could crowdfund an insane amount. Next, blockchainized everything now is the trend. Everyone is moving on into this tech, transparency and decentralization is the key word we looking at now.
However, i believe companies who are greed would missuse it