Not all business classes are the same though, are they?
QR might well say that they have worked hard to reposition their product upmarket with Qsuite. And it seems that the market agrees. P doesn't need to be made available at all on many flights because they are confident of selling out at the higher inclusive fares. People are paying and J cabins are full.
But where they do have some excess capacity, rather than devaluing the inclusive product and dragging those prices down, they strip out a few things to justify the lower cost and to meet the price point of cheaper competitors. Many brands in many industries do exactly the same.
Which then leaves the customer at that lower price point with a value judgement and personal choice - buy QR with a few things omitted, or book AirBogStandard with everything included but accepting that their everything isn't done so well.
If customers at that price point don't like one they can choose the other. The actual cash prices are irrelevant. But feeling aggrieved that a full top end product isn't being made available for the same price as a worse or unbundled product offered by a competitor seems a bit unrealistic.