As the price of bitcoin rises, the transaction fees measured in Satoshis are going down.

If a transaction for example costs 2000 Satoshis today, it is going to cost 200, then 20, then 2 (and even smaller if needed).

So, if the transaction has a volume of 100.000 today, in the future the same "price" could be 10.000, 1.000 or even 100 Satoshis.

As long as the relationship between transfer and fees remains similar, this will not cause a problem.