You want a smooth livestream for the RWC action. When I think VPNs, I think slow and patchy at times - even the ones you have to pay for. If you're in an area with dodgy broadband, a VPN will only make it worse. If you're in an area with good broadband, a VPN might make it seem like you're in the middle of the Remutakas.
And although it's tricky to block VPNs, Netflix - once it was finally nudged to clamp down - proved it could be done reasonably effectively, especially for non-technical viewers.
Yes, it can be a bit Whac-a-Mole, with new VPN servers quickly emerging to replace those that have been blocked. If you're following a series by VPN, it's annoying but no huge hassle to wait a bit for your VPN service to recalibrate. If you're watching a live game, then waiting a few minutes, or hours, is a non-starter.
A so-called "Kodi" set-top box can give you a better experience, but note successful legal action has been taken against two of the resellers of this kit. You don't want to get caught up in that.
Lastly, don't be a dick. Spark has put itself out on a limb with its bid to stream the RwC live.
Some at the company - okay, its boss - might see me as too negative about Spark Sport. But it's tough love. I want streaming to succeed for more and better coverage of sport, whether it's Spark Sport or a rejuvenated Sky TV Fan Pass.
That'll be good for providing funds to keep our top teams internationally competitive, and good for fans. Get in behind it.