Crypto Airdrop: Why Would A Company Give Me Free Tokens?

As mentioned, the market for ICOs is over-saturated beyond belief. Most people are more likely to roll their eyes when they see a new cryptocurrency rather than invest. That said, if the team behind that new currency gives out free tokens for attention, they are much more likely to get it. In marketing, first impressions are incredibly important. How could you not think highly of a company that pays you upon meeting?
If a company sends some of their token to your wallet and you notice it, it might prompt you to look into their project more and if you like what you see you might decide to invest in them. It’s free marketing for the token sale or coin launch really, it costs the company nothing to provide these tokens to you but could help them with brand recognition.
Another reason companies give out free tokens, is to help decentralization of their currency. A recent example of this was Omise Go who airdropped large numbers of their tokens to Ethereum holders shortly after their successful ICO, stating :

"At OmiseGO, we believe that tokens are most useful when they are as widely distributed as possible. In the case of a permissionless proof-of-stake (PoS) network, especially one running a very economically valuable decentralized exchange trading both cryptocurrency and real-world money, a wide distribution is also critically important for network security."