functionally this will be achieved by yield. node operators are paid to do on-demand jobs like ccip transfers, vrf, functions (the latter now enabling low latency pull oracles that cost money with every request). every job has a premium, dependent on the kind of job, that is paid on top of the gas price. meaning that every job is net positive buy pressure on the LINK token, even when part of the LINK reward is sold to cover gas. furthermore, since jobs have collateral requirements, nodes will need enough LINK to meet those requirements. to get that LINK they must offer competitive yields to stakers, meaning nodes will share some of those premiums with anyone who decides to delegate them LINK. And because the best, most reliable nodes will get the best jobs, there is competition among nodes to get that staked LINK, allowing them to service high value jobs, and demonstrate their reliability to additional clients who are looking for trustworthy DONs.