Excellent read. Love the historical perspective driving the analysis in this article.

"Soon Edison was supplying enough power for about 10,000 electric lights. The number of customers was limited by the high cost — 30 cents per kWh — which only the richest businesses and wealthiest families could afford. But by 1920, the retail price had plunged to around 10 cents, and electric lines were extended to a third of American homes."

Perhaps worth noting that Tesla working with Westinghouse on AC transmission was key to efficient distribution of electricity that made this possible (the war of the currents). What causes a competing technology to emerge as the winner can often be as fascinating and insightful as the evolution of the technologies themselves.