If the coin price goes up it doesn't have to mean that hosting on SC would be more expensive than competition, just imagine if the number of hosts and users comes close to the level of Google + Amazon + Microsoft - then we would see increased demand for SC and a lot higher coin price ...
Right now we can't really know will it happen or not, but so far the devs did a pretty good job. I remember how the SC client worked when this coin was in early stage and the price was below 10sats, back then it was an adventure to try to set up a host even for pro IT folks like me, now it works like a charm.
With video streaming coming within next 6 months and the ability to share files outside the SC network somewhere by the end of next year I feel like this project has a bright future and the current price (below 200sats) is a steal.