Anyone Invested in Domain Names or Seen Them as Online Real Estate

Has anyone ever flipped domain names or bought a bunch and kept them in a portfolio? I do this on a regular basis where I usually build a portfolio of about 50 domain names I acquire and then sell them all at once for a decent profit. I'm also looking into taking that money and buying a super premium domain name and then leasing it out. I think online assets will be huge in the future and domain names aren't going anywhere. I find that .COMs are the most valuable. I have been flipping full time for years now and this is my main job making 3 - 5k just on domains aside from my other business. https://www.reddit.com/r/investing/comments/eg4fr9/anyone_invested_in_domain_names_or_seen_them_as/?utm_source=ifttt