A very strange reply as in many cases you find the ideal layout, but the MTPLM is too low. Why can't people have a choice?
People do have choice, either accept what's on offer and the compromises it brings, or look elsewhere, or don't buy at all. After all very few if anyone actually needs a caravan, they only desire one, I doubt anyone's life depends on owning a caravan.
You can "wish" for anything, but realistically you can only choose from what's available, and what's available is driven by the caravan manufacturers bean counters, not customers wishes.
UK caravan manufacturers have had more than enough time to realise that many caravanners might desire a greater payload capacity, so ask your self why haven't they listened? Its down to what they think they can sell, and in the UK ( and EU) the way the way the licencing regulations and industries' own guidance have developed mean that increasingly manufacturers are being forced to look for less heavy caravans which counters against larger payloads.