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I remember this happened with BTX (BitCore) too. I still have a few thousands (bought, not airdropped) laying in my wallets. Unfortunately, the price dropped to an unimaginable level probably because of the lack of development. Now it's worth somewhere ~100x less than what I paid.
Investors put their money on these coins because they want to hold more. Example: holding 10BTC would have airdropped you 10BCH. If you compare the prices of these two, you'd have a good idea why 10BCH is nothing for someone who holds assets worth >$65k. Moreover, there are shitcoins like KICK that need a boost. Give people your coins for free to make them interested in your project => accummulate new fools.