Remember, you only pay tax if you make a profit!
Therefore the likes of EuroManx are unlikely to benefit much, at least for a while. The old Manx Airlines was continually struggling for a profit so with the damage BA has done it is probably a loss maker now.
Initially I think it will encourage air taxi operators.
Ryanair – quite unlikely. Flybe expansion – more likely, and certainly would go down better than an O’Leary invasion!