Marketing is like raising sails on a yacht or sailboat. If there’s no wind blowing, it doesn’t matter how much fabric you unfurl, your boat won’t go anywhere.
Might as well leave the sail in the locker.
Catch the breeze by finding a sector of the market that’s enjoying growth or soon will be. Find a favorable position within it. Once this is achieved, you can spend up big on marketing and the wind will carry you along.