The framing of the question misses the point. With electric lighting we can now work longer into the night. Yes, less people use and make candles. However, the second order effects allow us to be more productive in areas we may not have previously considered.

New technologies open up new opportunities for productivity. The bank tellers displaced by ATM machines can create value elsewhere. Consumers save time by not waiting in a queue, allowing them to use their time more economically. Banks have lower overhead, allowing more customers to afford their services.