not a panacea, but it's a giant step forward.

It could have gone further. They've made a step forward, but it's not a giant step. The question is whether they're able to alter conduct. Time will tell.

Massive step forward

Having wireless broadband would help some of these disaster situations. But it's not the panacea.

Turkey has taken a giant step forward on its historic march.

would not be a step forward. At best it would be a step sideways.