With so many new companies and titles, new games are going to be like new cars: they will lose an initial 20%, possibly more, on cost unless they kick absolute ass and have low production. LOTR is a good example of a machine that is correctly boosted for the market, and it will rightfully retain that boost.
What I think everyone should pay attention to is the amount of wealth and supply/demand.
Wealth:
Just because you struggle to buy an 8k pin, doesn't mean there aren't 20 million North Americans (not to mention the rest of the first world) that can easily afford to buy several 5k+ pins and enjoy them.
Supply/demand:
The demand for pinball, in general, is on the rise, and this is obvious by looking at production and the market. Stern is upping its production, and companies like JJ and AP are producing great titles. As for a secondary demand, there is a large interest in younger people; for example, the league I am in is mostly young people recruited by older people. Will this new market replace the old? YES. There aren't that many 40+ year-old pin collectors out there, comparatively speaking to other major hobbies. I see the market at least doubling, and a key difference with the new members is that these kids are meeting owners, not just seeing pins in arcades. I wouldn't have imagined owning a machine when I was younger. My league is small, and a couple of the kids already have plans on buying in the future.
Is this a rich person's hobby? For A list titles, absolutely. Are there a lot of rich people? Yes. Will there be more rich people that like pinball machines in their dungeons in the future? For sure. Will they want Twilight Zone over the newest digitally enhanced machine? Yes. It is simply a better playing machine. No LCD will change that.