Why has the progress in the notebook's memory configuration stopped for years?

I bought a mid-range notebook (price range somewhere around 600 euro) in 2013, 7 years ago. I5 dual-core CPU, 1TB HDD, 8GB Ram. At that time it was common equipment. Now that the device is getting on in years, I slowly wanted to look around for a replacement. While all components - CPU, graphics chip, SSD, etc. - made huge leaps in this time, the time has practically stopped in terms of RAM. Notebooks in this price range still have 8GB, you have to dig a little deeper or find a special offer to get 16GB.

When I think back on the development in the past ~ 30 years, it was actually always the case that the usual ram equipment doubled every 2 years - so we would actually have to be somewhere around 32-64GB with an average device. Why has development stagnated for so long? Has the limit of what is possible been reached?

The limit has certainly not yet been reached. But mobile technology is relatively expensive! And now that all ultra-low-power 8 cores have in notebooks, the budget was used up.
I think that the target group of 600 euro laptops rarely needs more than 8 GB and is therefore simply saved.

The limits of possibility are far from being reached.

The following problems:

- With more RAM, the laptops become more expensive. Especially with fast 32GB RAM you can sometimes add 100 to 200 euro.

- It doesn't need that much RAM. A very simple point: According to the manufacturer, those who want to play gaming can get a gaming PC. (It also fails because of the battery life.

-The manufacturer wants to save everywhere. Again, this is a simple point, but if you invest in things like processor and graphics, you can also advertise with it. In the case of RAM or normal memory, whether HDD or SSD, laypersons usually do not know what is good or what is not good.

Ram in notebooks Laptops in general are really expensive and what has changed is mostly the MHz number in the RAM.