If you're worried about Brexit then there's literally only one way you're going to get to try to prevent that, or at least mitigate the shitshow of a deal Boris has for you.
As for nationalisation,
https://www.theguardian.com/commenti...box=1575909790 well this uses IFS numbers, and crunched by academics that
show it'll pay for itself within 7 years. That's not a big gamble at all.
For sure it's shit, but both sides of that battle are a fucking disasterpiece. Boris though is happy to encourage all that here, is all that himself and it too has very similar consequences.
Again, you're ignoring a side wanting to do better to tacitly support a side who actively strives to do worse. It makes no sense.
Abstaining in a contest of which shit smells sweeter isn't going to give you some kind of moral victory when the outcome is the worst smelling shit possible.