As I said, there are many reasons combined.
At first, Dofo.com has a vast amount of
data behind it. The server cost was very high (5 figures per month). We were not so sad about the cost. Although it was for-profit, it was like a give-back to the domain community because we earned good enough from "domaining". We built it to be a solution to a problem we faced firsthand:
There is no platform you can search through all domain names, and there is no platform you can search domain names for sale at different marketplaces.
We worked hard and built it. It wasn't easy to get data from different sources, standardize it, and present it appealingly.
We did all these with a very high
motivation. We got very motivated feedback from such valuable friends all over the world.
The technical side was not a big issue for us (we have a top-notch engineering team to solve the problems), but we are tired of ensuring about data
accuracy we get from marketplaces. This is not something we should solve but should be solved by the marketplaces. We suggested our help to them to solve such problems technically, but it didn't work. We were shocked sometimes seeing how old-fashioned they were. We don't blame anybody. They said, " no need to touch it because it's working," and they were right. So, nothing to do
Another point was that many domainers were using dofo.com, but only a few helped us
spread our voice (they know themselves, and I thank all of these friends personally). Others were using dofo.com but were trying to hide it from others

Of course, we can't blame anyone for not promoting us
Dofo.com was using
affiliate links. The affiliate links don't have any extra cost to those who follow the link and buy domain names via Dofo.com. We heard that "we use Dofo.com to find domain names, but we directly go to the marketplace and buy, not via dofo.com". Yes, true. Nothing to do here, too
And many "bad people" tried to
abuse our service with bots (they were successful sometimes). We didn't want to deal with this anymore.
We didn't want dofo.com to end and talked to a few "industry players" about the possibility of a takeover, but we would still have to deal with the technical side, which was meaningless for us.
As a result, we have gained so much experience. And we are using this experience (both technical and business) in another business where we don't have to deal with the things I mentioned above.
This is probably my last message on Namepros.
Thanks, everyone.
Thanks a lot to the friends who always support us.