Climate change solution

While I was driving today I heard a radio commentator saying this below, when he was asked why he opposes the climate change discussion happening in UN.

"As long as the fossil fuels are cheaper than renewable energy, the whole discussion about setting the carbon maximum limit by each countries are not going to work. Because they are going to break that or indirectly manipulate to meet it. There are very less chances to make impact as it is not cost effective yet. The only way to make climate change effective is make the renewable energy much cheaper than fossil fuels. Investment and innovation in renewable energy to reach the masses are the only solution for climate change meaningful solution."