In my own home country, Norway, Statoil (one of Europe's largest oil and gas companies) are transitioning more and more into an "energy company".
They have, for instance, been working on this project for a long time to use offshore Oil & Gas-rig technology and competence to build the world's first floating windpark. And those windmills are massive!
The most important things that are slowing progress down in Norway though, is mostly the fact that the Oil and Gas sector employs so many people, that politicians still want to incentivise opening new sections of the sea for drilling, and even giving subsidies for companies to search for new reservoirs.
Anyways, things are going the right way :)
Yeah, change is always difficult but it always happens anyways. It's nice that Statoil is building that wind farm. There is so much available energy every day from wind, tides, sun that we could power ourselves for thousands of years. We just need to get better at harnessing that power. If the progress in this area is kept unrestricted, I think within our lifetimes, we are going to see a totally different world, energy-wise :)