I accidentally built a 1000 subscriber niche EU Tech policy newsletter. How would you monetise it?

Slightly unusual question for this sub, but I think people working in the Brussels bubble are probably better placed to answer it than a generic newsletter or marketing community.

I run a free newsletter covering the upcoming Digital Fairness Act.

It started as a fairly small side project, but it has unexpectedly grown to around 1000 subscribers. From what I can tell, most readers are actual people working around the file: tech lobbyists, EU officials, lawyers, journalists, trade associations and public affairs consultants. It is still quite niche, but arguably a valuable niche.

The law has not even been proposed yet and has received relatively little mainstream coverage, so I expect readership and interest to grow considerably once the proposal comes out and formal negotiations begin.

I'm wondering whether there is a good way to monetise it without turning it into an annoying industry advert or undermining its independence.

For those working in public affairs, law firms, consultancies, trade associations or EU media, what would actually make sense here?

Paid subscriptions? Sponsorship from relevant organisations? A small jobs section? Sponsored events promotion? Paid briefings or research? Something else entirely?

I have come up with some ideas, but I don't really know how I would implement them since I'm not really in the bubble (yet). Like, do I just email random consultancies and say "Do you want to pay X for an ad in my newsletter", and if so, how much could I charge?

I am especially interested in what organisations in the Brussels bubble would realistically pay for, and how this might actually work in concrete terms. Does anyone have experience with this or have real anecdotes that might give me ideas?