I've said that for years, all the trends die with tens of thousands of domains in the hands of domainers that don't go anywhere.
When I started in the business I picked my own trends LLCanada.com and .ca and MapleWord.com and .ca
I did well with them because I picked them without hundreds of domainers doing the same.
Today I don't jump on the bandwagon anymore, nor do I buy any more of my previous trends. I pick every domain based upon research or if it speaks to me. I can afford to sit on my domains but usually I let a few go cheaper to assure my renewals are paid. Same goes for the tax man, you cannot claim expenses every year without eventually showing a profit or it will attract undesired attention.
Blaze your own path, read what other successful domainers are doing and forget about the TREND of the DAY, very few people manage to make money on them. Only a few are ever successful and all you have to do is look at all the VR domains that have dropped over the years. I used to laugh at that and I still have the only one I ever bought VRStick.com. I hang on to it to remind me that following the trend of the day is almost always a loss.