Its strange that Star does not see the clear trend in continuously lowering the buy up offers

For example on recent DEN-SFO trip Sat-Mon. At booking got the offer immediately for $400+, also offered when looking at my res and on OLCI offer lowered $239. I was #1 of 20 for the CPU and sat E+ because it wasn't worth it. United wants to sell upgrades/E+ any way they can. With few caring to pay for a poor product, the price drops. This is clearly the United revenue enhancement strategy.
This strategy has not totally affected my upgrade rate as I have planned pretty well. I have cleared 2 of 4 eligible CPU flights, successfully applied 2 RPUs and bought into discounted Z on a midcons. I recently bought a TOD for an upcoming west coast trip because I was tired of watching and worrying about it. The effort and $ is losing my loyalty. I'll go from $35K and 100K miles last year to $10K and 50K miles this year on UA. I will occasionally fly UA when convenient for me, but my international travel requires a connection, why not travel with a company that tries to take care of its elites (AA)? This doesn't even get into the overall poor customer experience on United.
On AA I am 8 for 8 UDU and 3 of 4 on SWUs. Even if AA service levels go down, could they sink below how United treats me? I'm willing to bet DP will not sink as low as Mr Smi$ek.