It may need 100kw during certain phases of flight --take off and landing for a VTOL craft, or just take-off for a standard aircraft. Cruise power is generally far less than take off/hover power.

If the craft were entirely wirelessly powered, then of course the system would have to be able to transfer 100kw. But the link(if even 50kw were ever feasible) could be designed for a lower power level, and the aircraft could draw from an onboard battery bank for extra power during these phases of flight.

Kind of like how hybrid drive vehicles undersize the internal combustion engine and then draw power from the ICE and the electric system during heavy acceleration.

But we still need to find a reasonable way to wirelessly transmit large amounts of power safely and efficiently.