I strongly concur with some opinions shared. As I've previously mentioned on different posts, it's shocking to see how seasonal servers gather this much population. However, being back in the game some months I did start understanding how the current community of L2 plays and thinks.
It's a huge problem, but in my opinion the guilt is shared between server owners and community. To keep a long term project running (more than a year on) you need to have the equivalent community that will support the project, which unfortunately is not that big. The current player community of L2 hops on new servers with such a haste to get full and "dominate" which does indeed give a lot of activity for some weeks but after that it's just downfall, population gets reduced drastically day by day. The reason is, while the community is busy "grinding" to win on their current server, a "new" server is being advertised which most likely is from the same owner. As I've mentioned, the guilt is shared since the server-owners focus on bringing up "new" servers for the cash grab but also since the community doesn't have the patience to support a long-term project. Besides, let's not forget about clans/CPs being invited directly to the server with some benefits. I'll give an example. An admin opens a server, invites 3 groups (either CPs or clans) by promising them some small benefits. Those three groups will invite more players and so on. It's like an investment, they spent 5$ to earn 20$. Therefore, most admins willing to play "fair" do not succeed, except for a few. Most of us "old-timers" play for nostalgia trips and are fine with low populated servers but lets take a step back and think about the owners that really want to provide a good server, no income will slowly dry out the server and eventually die.
Don't get me wrong, there are some great servers out there, but not everything is for everyone. I'll finish by quoting someone I saw few days ago on YouTube, he said something along the lines that we shouldn't expect fair play while we play an "illegal" version of the game.