The answer is not clear.
Vinyl grooves are "v" shape, if you make the groove deeper, less amount of grooves you can put on a disc.
The problem is, that when you make the master disk, you have to cut the grooves with a cutting machine designed for this.
It is fully mechanical, and has limitations.
If you put higher pressure to the cutting head, you can make deeper grooves, but Wawes can be distored, because you increase the tention in the material, so the waveform will be distored a lot, and it is pretty hard to make one.
And making a master disc is a one shot thing, if you screw it up you have to do it again. And of course, that stuff got two sides...
After it's complete of course, comes the Negative copy of the master disc, from which other discs will be molded out.
I guess I didn't said stupid stuff....
BTW, if you wanna know how vinyls are made, check these out