easiest way to collect bitcoins at the moment is to either buy it or to participate in signature campaigns
buy bitcoin is easy, but it is difficult to buy because we dont have no money and it's not a good way to collect BTC.
Buying bitcoins is really a easy way but we cannot call it collecting i guess, because we are paying money to get that and OP doesnt mean that by collecting.
And also, not everyone in this industry can buy bitcoin, maybe there are some people who have no jobs, or they are still students like me, so they won't be able to do that thing that is why they will have to find another way to collect btc.