At a later stage, other companies would participate on a voluntary basis. See article 9 Amendment to Directive 2013/34/EU of the Proposal for a Directive of the European parliament and of the council amending certain Directives as regards the establishment and functioning of the European single access point.
And we shouldn’t expect the planet to make things any easier for us. Quite specifically, this means we’ll need to be ambitious – far more ambitious than before. And we’ll need to take a systemic view of the matter in hand. Every area of the economy will need to adjust by correctly pricing the externalities of climate change and internalising them.