Of all the comments to argue against the use of a mysterious “they”, I think you’ve picked the wrong one.

It’s pretty clear who the “they” is here: Conservative politicians in the pocket of corporations who would stand to lose from cheaper, cleaner energy sources.

I’d go one step further and erase “Conservative”, because it doesn’t matter your other politics if you’re receiving bribes lobbying money from big business. It does at least seem to be skewed more towards politicians in Conservative parties though.