There is time: in March, 2% of new vehicles sold in Europe were BEV. On the other hand, the total spend on electricity per mile driven is 1/3 that of petrol. That means a complete transition would ultimately yield 1/3 the revenue. In order to remain even, the companies would need to see 3x the gross margin on the electricity than they gain on petrol. Is that possible? BP's gross margin is 7.5% (TTM). Can they get <20% gross margin on electricity?
Maybe. But the real killer is people charge at home, over night. So, no. Electric charge stations will not supplement petrol station revenue. They are toast. They'll need to find entirely new businesses to invest in to survive.