You're right to a point (although a little bit GCSE in your thinking), and a "massive" increase in the cost of paint is retarded. However the UK pricing structure is wrong and needs to be redressed. We probably pay less for bullets as a proportion of income that the U.S. The current trend of selling paint at too cheap prices or direct from wholesaler to customer undermines the retail distribution channel. Super Air players do not do anything to qualify for special status aside from a volume discount (at a sensible rate).
Making it too cheap to play, also discourage people from trying to better themselves as players to qualify for better sponsorship or incentive packages. The assumption that you have to download thousands of bullets weekly to become a better player is flawed. 70% of UK players could improve their game by joining a Gym.
Wouldn't a price increase really put newcomers off the sport? The first time I played I did not even know sponsorships and such deals exist, and I had to pay approx 1/12th of the base wage for one game. I really don't know about the UK so I might be making the wrong assumptions here, but in Greece it is still expensive, and IMO this is a huge factor that should be considered if we want more players to join the sport.
Then, there is recball and speedball (sup'air). As most of us (I suspect) I started off with recball, and when we were told that in supair teams spend boxes upon boxes of paint we were instantly put off by the cost of it. With a sponsorship it aint that bad, and the team manages to practice about thrice a month.
The math for younger people here is not that good when it comes to paintball, as most of the 15-20's don't work or work part time, and 21s to 25s are usually working for the base wage. If you deduct from that money the cost of paint, tourny fees, traveling, etc, it does make a difference.
What seems wrong there is the direct line between wholesaler and customer.. but then again fields could be non-BYOP to reduce that, and maybe be BYOP for Open Tournaments or leagues.
Regarding the packages you mentioned, I totally agree with you, since we are following a tier kind of sponsorship, currently enjoying 10%-15% off hard and soft goods, and a discount in paint (something like 23 quid for white box, 35-40quid for pro formula). If we do well in the tournaments these will increase and have incentives such as some free paint or participation fees.
And lets not forget that the US is generally a LOT cheaper than europe