Node profitability

Hello. I saw a website, during my learning session on Mina, that made a prospect. It says that the costs to have a node active are so big that Mina rewards will not cover it enough. Please could you provide a link to a page that explains how a node is rewarded? Thanks.

There is some info here.

To have a chance of winning a block and receiving rewards at the moment from running a node you either need to have around 70K tokens yourself, or have a delegation from the MF or O(1) Labs in which case you need very high uptime or you can provide staking services for the community. All of these things are possible to do. ATM it might be better to get more advice on the Mina discord channel.