You may refer to the community-provided earnings estimator to get an idea how long that may take to actually fill 30TB with your node. Again, even if you had already 30TB filled the actual diskspace used will vary depending how fast customers may decide to delete some of their data vs how much new data gets uploaded. There is no easy 30TB storage provided → 10TB worth of space on Storj DCS formula we could offer.
The only thing that we could consider is implementing an option for SNOs to select that instead of receiving payout, they want the earned amount to not be disbursed to their wallet but applied to their STORJ DCS account balance in equal dollar terms. That would also require them to signal that they have an account on a certain satellite and under which username/email. You can ask people to vote on such a proposal so that devs may consider to add this to the road map if there is sufficient demand for this.
I am not sure I understand your proposal involving collaboration with other node operators.