If everyone stopped using their SBS's and RadarBoxes and did not subscribe to the Network then what data would these "free" sites be able to display. Not much I would suggest.............
The subscription to the network is only applicable to the provider, in being able to (part) fund its existence - I'm more than happy to share the data from my box for purposes of the network to other RadarBox network subscribers,yet have chosen not to re-subscribe,partly due to the increase of the number of free sites available.
I suspect due to the significant increase in not only the number of enthusiasts taking the decision to buy a "box" from whichever supplier, and also a visible increase of "add-ons" and other manufacturers entering this sector of the market, we may see a fair few of these free sites appearing over the next year or two as a basis to evaluate what users want, as at the moment it's not necessarily obvious who is hosting these sites and if for commercial or amataeur purposes.
It wouldn't suprise me at all if the free sites increase their coverage in the short term, as people become more keen to become affiliated to say society based groups, especially seeing as how TAS Manchester have included two such sites linked into their home page, and also how various spotting databases can "link" into the software of certain products (RadarBox included)
I think most serious enthusiasts would still prefer to own their own hardware as it's now becoming very common to see several "box" users either at airports, around airfield perimeters, where an internet connection isn't always practical.
As a user , I suspect we may be in for an interesting couple of years of development from all parties in an attempt to push the boundaries further and in doing so win more customers
Personally, I'm glad to see these free sites on the web - I only have to think of the cost involved on following this hobby when I was a young lad, having just enough money to visit the odd airfield or two, but not being able to afford airband radios (no scanners around in those days!) or proper cameras, but just enjoying spotting for what it was, and the camaradarie that developed through it - much tha same as we (hopefully) all do within this great forum - so if it helps to bring others onboard, then all the better!
Cheers
Rich