It IS hard, for various reasons listed in this thread that people seem to just keep ignoring. They cant just wave their hands and make the servers able to handle more. While the houses themselves are instances, the wards are not. They are constant. That means that unlike instances that get unloaded when no ones there, the wards are always up. Constantly running, keeping everything loaded. Keeping track of every lamp post and bench in the ward itself, what all the npc's are doing, as well as keeping track of every single bit of decoration on every housing exterior of every house in the ward. The way they designed it, Wards are very server intensive, and the servers can only handle so much. Why everyone on here thinks that they can just wave their hands and POOF INSTANT MORE WARDS, i'll never understand.
But they are addressing it, just not in the way that you want. In order to fully fix the issue they would have the redo the housing system from the ground up, or at the very least they would have to make the wards instanced (which is a huge amount of work in itself, hindered in part by the games ancient code) which would present problems of its own. This would also require a large chunk of dev time, which they would need to be payed for.. their pay comes out of the budget, which is definitely not infinite. So therefore the funds to pay the devs to completely rebuild the housing system from the ground up would mean they can't get paid to work on other content. That means less new content, less QoL updates, etc.
It IS being addressed. Their housing system is badly designed, But it's what we have. We have to deal with it, and they have to do whatever they can to make it work. They're trying, at the very least.
So Free Companies (groups of 4-500 people) should get shafted instead? "oh you didn't get one during that mad scrable on a specific day, so too bad, now can't have access to basic functions and mechanics that are required for your free company to grow and be successful."
The needs of an entire free company, the happyness and enjoyment of an ENTIRE GROUP OF PEOPLE is somehow less important than your desire to decorate a house?