After IEO's many companies are not showing interest to launch the bounty because exchange itself taking some professional activity in the market. So this makes the companies are not showing interest towards the bounties.
IEO means no bounty, maybe in big exchange like Binance they don't need, but with small exchange, they need bounty for their exposure.
The thing is there's less project compared to last 2017's ICO, so that only create little opportunity for bounty hunting.
You are right.
Most of the money companies use goes to promoting. You will notice companies that are well known have good promotions. Sometimes a new brand comes in and owns the scene with ads all over the place and this often works, its like a takeover. Some companies are born that way. All the big brands display their banners in the most popular places to the point where even your gran knows what the brand is even if it's targeted at young people. That is what good advertising does.