This is why Ethereum and Stellar were developed. Better fees and reduced block transaction times.
i don't know about stellar but ethereum has proven that its fees will grow much faster and much bigger than bitcoin fees because it has even more serious scaling issues. you can see the average transaction fee of it here on a chart which shows average ether fees reached $2.5 per transaction about 10 days ago:
https://bitinfocharts.com/comparison/transactionfees-btc-eth.html#3m