Have you ever thought of this before?
When I first heard of IEOs from smaller exchanges, I thought they were simply catering to one of the demands of ICO investors which is immediate exchange listing.
Then came the bigger centralized exchanges like Binance, Bittrex, and Kucoin. It somehow made me wonder why would they open up their platform to crowdfunding. Maybe because they also think that the ICO market is dying? If so, then that would mean less new projects. With less new projects, less potential source of income (listing fees).
So in the end, it is still all about the $$$. These exchange are probably afraid of losing one of their major source of income

What's your take on this?
I believe you're right on this. It's all about the exchanges thinking up new ways to keep the income flowing but in doing so, they are doing the entire community as well as new projects a favor. At least I can trust a
a bit more as their reputation is also on the line.