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Thanks Tim! You are right, as usually.

I've just read this again from the relevant steemitblog post:

Witnesses will have two new witness parameters to submit. The account_subsidy_daily_rate will control the amount of discounted account creation tokens that are added to the global pool daily. The account_subsidy_pool_cap will control the maximum number of discounted account creation tokens allowed in the pool.

At first I was given the wrong impression by this paragraph in the current post:

Pending claimed accounts are not transferable to other users, but they do not expire, and there is no limit on how many an account can hold.

But after reading them again, there's no contradiction.