No, because direct lift is expensive, and the square-cube law
First, direct lift — i.e. your engines providing an upwards pointing force directly — is always "expensive" in that it requires lots of fuel / engine power to achieve. Indirect lift, by for instance using airfoils / wings, is much cheaper and efficient.
The "only" drawback of indirect lift is that you need an extended strip of suitable land as a runway.
Second, the square-cube law means that small quad-copters do not translate to big dittos.
Generally speaking the square-cube law means that if you increase something in size — i.e. scale up or down width, height and depth by the same ratio — then all of the surface areas increase by the square of the change, but the volume and therefore the weight increase by the cube.
So if you double something in size (multiply by 2) , all of the surface areas increase by a factor of 2 squared, i.e. $2 \cdot 2 =4$, but its weight will increase by 2 cubed, which is to say $2\cdot2\cdot2=8 $.
This is a problem for rotor-craft because the direct lifting force that a rotor-craft needs in order to take off and land is roughly proportional to the surface area of the rotor disk. But the surface area only increases by the scale squared while the weight, and with that the gravitational force that you need to overcome, increases by the scale cubed.
So even if a small quad-copter can take off with ease, a large one will be under-powered.
Vertical Take-Off and Landing has been sought after eagerly ever since World War II showed that the things that you call "airfields", your enemy calls "huge, immobile targets"; they are bomb-magnets. And yes, the helicopter can achieve VTOL, hooray! But the helicopter generally lacks in all the other areas that fixed-wing aircraft do well: speed, cargo capacity, endurance.
Unfortunately this translates to quads-copters as well. And it does not become any better when noticing that the quad needs all rotors to spin and to spin in sync in order to stay afloat and not fall over in a spectacularly violent fashion.