It will depend on many factors , but also if you gonna use there service ( Sia)

There are many competitors in Decentralised storage market

1- Sia
2- Storj
3- Filecoin/IPFS
4- Arweave
5- Tron/BTFS

So if Sia is able to compete with these and able to get a sizable market share it will definetly be good statement. I think specially in utility coins ,try to invest only if you yourself will use that service as you will be able to better judge it's potential. For e.g BNB got very successful for it's utility to traders and investors. So if you are distributed  storage provider or can know about that market then you  will be able to judge the return in long term.

I think Sia is making progress and in next two three years they will have many applications launched but it will have the traction or get userbase that can't be predicted as crypto as a whole sector is very niche for now and dapps and services usage are very low.