Here's the bottom line guys...
It's a free and open marketplace. Opportunity abounds. Anyone that can build a better- or cheaper- mousetrap certainly has a waiting, willing market. Anyone that can build a Cigarette, MTI or Outerlimits-type and quality boat for significantly less would have long lines at their doorstep.
On engines- Who's #2? If it was ripe and lucrative, where's the Volvo Racing 525? Or the Crusader Racing 525? After Merc, there isn't even a #2. You have cottage industry type builders where one guy builds the engines. The only contender on the horizon is Ilmor. And while they make a great product and have admirably invested major sums in a program in a down market, they're not yet what you could call prolific. Nor are they dramatically undercutting Merc on price.
That is exactly what the bottom line is.
You don't have an Ilmor service center on nearly every body of water in the country either.
Comparing cars to boats, is barely apples to apples. Cars don't take anywhere near the abuse boats do in ALL aspects of their totally differetn environments. The engines couldn't be more different in regards to setup, and making them live longer than a weekend. Cars don't have to be prepared for salt water concerns, which are a huge, unspoken, detail.
If someone has to compare cars to boats, you only have to look at the Mercedes MTI. When it was brand new, it had an SL dash & components. Once the boat started being used, all of that had to come out or be replaced with marine parts, because it wasn't holding up to the various elements that a boat takes on a constant basis.
How has the price of a boat, car, or engine, increased since 1996? Seriously?

? Other than that being 14 years ago......obviously there have been some changes in economic inflation has increased, oil prices (which directly affect resin prices & other building materials), employee wages have increased, the list goes on with common sense reasons. The technology has absolutely changed for the better over that timeframe.
It's interesting that there are very few people, if any, posting complaints in this thread, that own any of the boats & engines being complained about? A few of the comments are laced with just outright jealousy aimed at the producers of these boats & engines.....why the hate? There's no reason to be condescending toward something that can't be had for the price you want to pay, or especially the people that build these items. It's high performance boating, which always has, and always will be expensive. Anyone that's been enjoying this sport, and learning about it by visiting factories, going to events, and asking questions to the right people, know what it takes beyond the paintjob to build them.
There are plenty of production style boats & engines out there, that will probably get you on the water every weekend for half the price of the elite brands. So there's no reason to complain about the few that are high priced, high performance, and highly sought after, just because they take it leaps & bounds further than the average is assumed to be.