Not if the gas cloud is large enough. Small gas clouds (white dwarfs, neutron 'star's) produce enough presure from particle degeneracy to support themselves aga

Not if the gas cloud is large enough. Small gas clouds (white dwarfs, neutron 'star's) produce enough presure from particle degeneracy to support themselves against gravity, medium clouds (stars) need active heating (from fusion) to keep gas particles moving fast enough to remain far enough apart to avoid forming a black hole, and for sufficiently large clouds even having the gas particles moving at the speed of light wouldn't be enough to avoid forming a black hole.