I have to respectfully disagree. While I think SE should have limited each account to one private and one FC house per subscription from the very start. Every paid subscription should have access to exact same features and benefits, whether a person has 1 or 100. What if a person actually wanted to play two accounts, or more so was paying for an account for someone else? Should the person they're paying for not be able to purchase a house in game?

I was lucky enough to add one of my alts to my friend list, so I can use my house while playing either character. But if I couldn't do that I may have purchased another subscription, and I would definitely be expecting to be able to buy a house on that new character.