So Lightning Labs are operating a new service that does everything their lightning client (called "lnd") should be doing, and they intend to begin to charge businesses a fee to do this!
They could have been offering a XAPO like wallet service and get revenue from ads, from the fees they don't have to pay for sending money between wallets inside their system, from businesses they can do with people's money as long as they don't get it out from the system.
It could be something better than the existing custodial wallets and it could have been the edge to have a flourishing business.
I am not a big fan of custodial wallets, but this is a possible future I foresee for "LN for the masses".
But the node software should have been open source. People could have been double checking and testing it. Benefit for everybody. Instead they chose to angry the community.
On the other hand I don't see any clear note they will surely charge money. All I've found was
No usage fees will be charged during the alpha, but on-chain fees will apply.
Of course, this can mean that they plan to charge, but you never know what the future brings...