Been following Sia since late 2015. It's an interesting technology, but utilization has been negligible and hasn't changed much since then. Check it here:
http://siapulse.com/page/network
1094 TB is available on the network, but only 2.33% is used - that's approximately 26 TB, a couple of HDDs really. What's even more interesting, that number has been the same for more than a year now, always hovering around 20 TB. Perplexing, I am still not certain are there some technical difficulties or the demand for decentralized storage solutions is simply extremely low.
Yeah, I think it's too complicated for an average person to use and the price fluctuation of SC is too much for a company to calculate cost basis for their monthly usage.