This is exactly why domainers are failing, they are not investing but gambling, and buying domains like they would lottery tickets. It just doesn't work like that, you have to pick the right domains to make sales.
Don't worry, if it ever takes off it's never too late to jump in. Rather be a fast second than a prime mover. I predict that this is another TLD à la .top/.xyz and most regs will originate from China. If you are going to buy a few, pay no more than regfee. Buying names at 1K a pop is ridiculous. If you have money to burn - donate to charities, not registries.