You got it right - crypto is most certainly will be the source of work and money for many developers.
If you're going to develop own product/coin (which is going to be useful of course) this could be way more profitable than participating in airdops and bounties
This is the most foolish thing I have read in a while. Developing a cryptocurrency takes a huge amount of time and effort. It is going to take many years. And even after all this, there is no guarantee that it is going to be a success. Look at the current bunch of ICOs. The success rate is less than 5%. Do you still want to ignore the bounties and take up this idea?
What do you mean "developing a cryptocurrency" ? Creating a token? It can be created
within 5 minutes.
Do you measure the success of cryptocurrency by number of successful ICO's? Not every project runs an ICO. There are other ways to attract capital. As well as not every project run a bounty campaign or an airdrop.