I have pretty much given up on mainstream brands, they are taking the micky.
I put my name down for the Pelagos 39, and when they eventually offered me one, I didn't take it, the price had increased enough, and my will to drop that much on a new watch had decreased enough for me not to be bothered about it at all.
And guess what? I do not miss having one on the slightest.
On the other hand, I have bought perfectly lovely micro-brand offerings with impressive specifications for about 5% of the cost that Pelagos would represent.
And compared to some other brands, the Pelagos is a bargain.
I have a kickstarter watch arriving soon made from Grade 5 titanium, DLC coated etc etc that cost £300.
Omega (amongst others) would have you believe that Grade 5 titanium commands a premium over the normal models of about £450 (judging my the master 300).
And don't let the invested blow the smoke that "prices will always rise". They won't, the emperors clothes will be revealed in all their glory, and prices will eventually drop. Not today, or tomorrow, but they will.
Now, it is watches like the upcoming Smiths Traveller that excite me, rather than anything mainstream. I am constantly, and consistently impressed by what smaller brands can offer in terms of value, and I am pretty sure all of my spending will remain there, barring a trade or two.
It is true that smaller brands do not offer the (dubious) justification of being an investment, but at least with microbrands you can be assured that a much larger proportion of your money is actually in the watch on your wrist, rather than propping up the marketing edifice of a large brand.
So in regard to the OP, yes and no
Many mainstream brands are too expensive, by a margin, but there are plenty of watches out there that aren't