Why no deals for long time customers?

The deals suck now they no longer cater to long time customers every deal is aimed for new customers or add a line promotions. They used to cater to their long time customer. I'm at that age group now that I am not a transient. My line is attached to my life. I would like a deal that raise my bill an additional $30+ because i added a line. at first i fell for the trap. Now i am looking to be a new customer somewhere else so i can lower my bill. This is basically like the contracts of old which ppl are trying to avoid. Trade in your old phone isn't a value either. I have been a customer since i was 16 left 1ce to sprint for 3 months but tmobile customer on and off for almost 20 years. Honestly I think i may go to another company soon that buys out my line promotion contracts