Pros:
The cloud storage market made about $ 18 billion in sales last year. As Sia is the first decentralized cloud storage that is already running, I see great growth potential in an ever-expanding market with up to 50% growth per year. Positive is also to mention that Sia is significantly cheaper than Amazon, google and co. The team behind Sia is doing a good job and is constantly trying to improve their system and the community is growing day by day.
Cons:
It will be hard to beat the big ones on the market like Amazon's Google Apple and Co.
Summary:
When sia gains popularity, I see a great opportunity for sia to compete with the big cloud storage companies in the future. Especially since it uses a decentralized cloud storage whose resources can also be offered by private individuals for a fee.