Over time, I think 2 things will (or should) happen if we want nostr to be scalable to user bases as large as Twitters and beyond.

1. Most relays will become either paid or ad-supported. For the latter, I know this is a big topic, but there are ways to do ad-supported without it turning into the garbage you see on social networks today. There will of course still be a smaller number of free volunteer relays, but those will probably be the minority.

2. As I love to rant about, a combination of NIP-65/Gossip on the content discovery side, and automatic selecting of relays to post to based on uptime + server load of known relays, in order to evenly distribute the load.

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