Why not have a "pro" version to fix this (this strategy seems to be working for another software company)...
The thing is, how do you do that? The only real way I can see to do it is to limit functionality in the DIY version. I'd like to avoid doing that, and provide full functionality. Something like Premise System's 'home' version that only supported a few serial ports, I'm not sure that's really something DIY customers would be much interested in.
BTW, the pro version is still considerably more than the new DIY cost.
In the end, as I've pointed out before, we want to keep the product available to DIY users, but we could never survive on the DIY market because it just isn't big enough. Do the math and you'd see that to be, say, a $3 million dollar a year company (a very small and limited company in business terms), we'd have to sell 9523 full system $315 packages a year. That will just never come even close to happening. The entire existing customer base probably isn't much more than twice that size right now.
OTOH, we can reach that size by selling far fewer professional systems in a year, and fewer still if a reasonable percentage of those include some type of consulting or logic/interface design work or ancillary hardware, something that is within the realm of reason.
If you could look inside companies like ours, Cinemar, Homeseer, Proximis, etc... you will probably find that those of us who don't have day jobs are doing little more than just hanging on. I've not been to the doctor or dentist in four years now. How long can I continue to push my luck like that? If my car breaks down, I'm going to be walking because I couldn't afford to fix it. I'm a couple orders of magnitude poorer than any of our customers, which is just not the reason that people go through the stress and risk to start a business, at least not long term.
So believe me, there is nothing even remotely approaching greed behind this price change or our concentration on the pro market, unless you consider being able to pay the rent and eat greed

We have to make this a real company, and we cannot do it by charging $315 a pop. It just isn't a sustainable business reality.