You can watch the latest dramas and movies as quickly as possible, and you pay for convenience. It provides a unique experience. Just like we can find all kinds of free music on the Internet, but it takes time. A music subscription membership allows me to enjoy music very conveniently. 

Now most of the open source clients on Nostr are paid for all users' subscription fees by jack  through opensats. Open source to C lacks a positive incentive mechanism. If jack stops funding that day, most of the clients will go bankrupt.