The only *viable* alternative to the venerable CRT in arcades is... Projectors.

You can build a box with a rear-projection-like setup, hardest part would be the calibration and sourcing of an appropriate semi-translucent display that will diffuse light appropriately.
But like the CRT it won't be pixel-perfect, which assists with some of the "tricks" games used to leverage like checkerboard sprites to simulate translucency for water by leveraging the natural blurring of a CRT.

But like LCD will have a degree of input lag... And brightness will be lower, so a high output projector is a must.

Yeah, I was reading fairly recently about laser projectors/TVs and was wondering if that might be the answer in the future.

I've heard there was some new CRTs from China, but haven't figured out if it they were newly produced to meet retro gaming demands, or it was some old stock.

After scouring the net for some time, I found out that, apparently, to produce new CRTs it's not so much tech itself that is the problem, but the lack of people who know how to use it and assemble them.

There are a few small manufacturers that exist which make specialist CRT's for industrial and commercial purposes (Think Jets/Planes), but they tend to be extremely expensive as they cannot leverage scales of economies in order to bring costs down.

Larger tubes also tend to be bulky which compounds shipping/transport costs.

There is also the toxicity of their manufacturing as well requiring things like Lead, which require special permits/licenses depending on country/locality... And they often cost a pretty penny.

Yeah. I'm guessing something like Prysm LPD would be an actual solution, given that it's, more or less, CRT alike, but with laser instead of electric beam on phosphor, but they seem to be interested only in business applications.

Eventually, I think it will settle once we have consumer grade display technology that solves pixel/motion resolution and colour/contrast, combined with advanced shader emulations of CRT working properties.

At one time, I had the largest size of CRT TV that was available to the public, a 36-inch Toshiba TV. This was around the time the Nintendo 64 launched, so I got to experience Super Mario 64 and Final Fantasy VII for the first time on a pretty good-sized screen. Moving that TV was absolutely awful and was a multi-person effort. On more than one occasion, me and my buddy got it up and down a flight of stairs.  I have no idea how much that TV weighed.

I now have a 65 inch Sony Bravia OLED screen. I can move that one pretty much by myself for short distances. 

So honestly, I'm content with leaving CRT technology in the past and to the enthusiasts who are willing to deal with them for the most authentic experience. I would like to get a 65-game JAMMA cocktail table. 

I still have 27" Samsung CRT hooked up...but honestly, I would like to get my hand on something like 20" max from the 80s - CRTs from the 00s can be "too good" for 8bit/16bit games.