Because there are only a handful of people who are really good in Hand registering domains.
It is not even a domaining skill anymore. It is like being a great guitarist, or a golfer, or an artist.
There are a few types of Hand reggers that I am aware of:
A)
Some people are just good in hand regging names. I can combine 2-3 words and come up with Nice Niche relevant names. Meaningful words will be hard to register. Because there are many Automated tools like NameMesh that will suggest all kinds of word combination when you use a root word. Take CBD for an example, Type CBD in any of the name generators you can't even get CBDMouse. Same with every good keywords. And these domains don't get deleted neither. Mostly they will be in Auction or grabbed in closeout.
SO who are these guys who are good in making up word combinations. Like I said they are good but most names are taken.
You best bet is to look for these words in deleted stream and hand reg again, because almost every word combo slight variation as well as misspelt words (Qoin/Koin instead of Coin) are already registered at some point due to law of large numbers.
This is also where most people do the most newbie mistakes. They go to deleted domains lists and hand reg every name that sounds good to them. This is the type of Hand you are typically warned against.
But then again there are many people who does very well picking up deleted names for hand registration. It is a skill that very few possess. I didn't even realize when I hand registered over 500 names in my first couple months. It is a rite of passage for a lot of domainers but can be risky for someone who cannot afford, because my 500 names are a loss of $5000 already.
B)
And then there are people who are extremely knowledgeable in a certain Niche and foresee an immense growth in that niche or industry long before other people see it and they use popular suffix, prefix, typo to hand register names in an industry that is not yet popular. Take the CBD example again. Long before Marijuana was legalized, many people including some folks from here hand registered hundreds of domains names and have sold for hundreds of thousands of dollars. If you ask what could be the next Marijuana, I don't know and I am pretty well read, listen to all the tech Podcasts regularly, subscribe to CB Insights and what not. And I don't even want to to go there.
Same was with Crypto.
Most likely a newbie will a bit too late to the party, and all the good names will have been taken and they will start registering junk combinations. Just use the NP search function and look for DEFI domains and Crypto domains for sale on Namepros with no buyers.
C)
When a new TLD or ccTLD comes out, some people made good money by buying up single word domain names.
There are a few folks here who does very well in .TV, .XYZ, .CO because they could register a lot of single word domains names, and then later build out their portfolio by reinvesting in premium after market names.
But for every .co, .TV, .XYZ, there is the .biz also
.UK is the latest crazy. Only timne will tell if the current .UK investors will get a big pay off.
There are those who invest in good SLD.nGTLD combo also
Home.Loans is a good combination, but they are limited and the highly relevant combinations are all reserved by the registry and that is also plce which can make a people do expensive mistakes.
So you gotta pick your poison.
Hand Reg is not the easiest path to success.
It is also not the cheapest.
Handreg typically has the least sell through, less than 1%.
let us say it is 1%, it means you need to register 100 names to sell 1 domain in 1 year.
Do the math. It is not cheap.