Commercial job at a midstream company or producer seems WAY better than starting at a trade shop. What am I missing?

O&G - I work at a small trading and marketing shop, and this is the only side of the business I've known. I'm not even in a pure PnL generating role. I have about 5 years experience. 

There are definitely some great parts about it  - eat what you kill type model, not a lot of big company BS. If I wanted to fly anywhere to try to win business, my company would approve it no question. So it's very commercial minded, making PnL is at the core of everything, not a lot of other nonsense. 

It's legitimately hard to keep in finding good trade opportunities in the market, to stay really tight with your counterparts, etc. I 

I look at my contacts who have "Commercial Representative" type roles at Midstream companies, mid sized E&Ps, etc...companies that have a natural long/short. 

1) Everyone is courting you for business, 2) You really get a good idea of where product is flowing, 3) Much easier to build a black book 4) Less overall stress 

Obviously the comp upside is way less. But for a younger commercial person, this seems like a WAY better place to start out. 

What's the catch?