> I am making a claim that there has been insufficient progress in e-ink space.
Insufficient progress? How does one know what is sufficient progress? To provide an analogy to software, you're saying the equivalent of there has been insufficient progress in Linux desktop.
Perhaps E Ink set too high an expectation? I never thought they'd even reach their current level of achievement. In my opinion, they're achieving about as much as what they can achieve with the physics of their material and the level of demand the market provides to them. For example, the most common request I've heard is when are they going to have bistable color. The response I would have is they had that at SID2019 but then nobody wanted to pay $2000 for a 16 color display that peaked at 16" diagonal. That's not 16-bit color, that's 16 colors! So they pivoted to adjust to what the market was willing to accept which was about $100 for a 7 color 6" display. That's what the market was willing to buy. Last I heard even that's thin pickings with no high volume products. In the display industry, if you're not able to sell at least a million displays a month, you're a niche player who won't be able to support having a factory with a fully tuned production line. Backplane vendors will treat you like a red haired stepchild and you'll be perpetually on the bottom of their manufacturing queue.
> E-ink is stagnating, this has been the constant lament on mobileread forums for 10 years.
Physics is a bitch ain't it? Perhaps you can invent a way for a fast moving pigment particle to achieve bistable and consistent positioning. You have access to E Ink displays after all, you could invent your own drive scheme if you believe they aren't doing the best that physics allows.
> People want high quality color, people want lower prices, and we are not getting it.
Yes, I want a $100 iPhone 12 and a $1000 ferrari and I'm not getting it. Why is that?
> Only recently we've had some larger devices. Why is only Dasung able to offer a very limited sized monitors and at a very high price to the consumer?
Volume. How many people are buying? Not a million a month? Then who wants to make it? Price correlates with volume. If you want prices to go down, go find a million buyers and put down the order so that manufacturers can afford to build up a production line for that device.
> When/if ever will we have $200 e-ink monitors?
When a million people a month are buying it.