This is too much of an extrapolation even by the standards of envisioning things like Dyson Swarms. You are assuming that: * It is possible to export or even h

This is too much of an extrapolation even by the standards of envisioning things like Dyson Swarms. You are assuming that: * It is possible to export or even host consciousness onto a digital medium - we still have no evidence for this * All or most civilisations ultimately will want to transition entirely into a digital existence - the "entirely" part is important. If even 1% of a K-2 civilisation decided to stay organic, that would still lead to a Dyson swarm with a population approaching trillions. * Civilisations of this tech level would do a cost benefit analysis and decide that the several orders of magnitude more resources on a star is outweighed by the inconvenience of a gravity well - I don't think orbital rings are that mass or energy intensive to build and run for this to make any sense * There will be no future use of waste heat or method of disposal that goes beyond simple dispersal - the jury is still out on that, it may be possible to dispose of waste heat directly onto a black hole. If this turns out to be correct, the energy of a star is more than enough to power a sufficiently powerful laser array to create many in the gigatonne range.