This is an area in which Microsoft fell flat with its MacBook Air-inspired Surface Laptop 7 ... you can choose between 16 and 32 GB of RAM (again, soldered, and with no post-purchase expansion).
The Alienware m18 R2 gaming laptop with the Nvidia GeForce RTX 4080 graphics card and 32GB of RAM is available from Dell for $2,600 following a $500 discount.