Major brands target the EV market

It may be a sign of the times but many of the major motoring brands now seem to be targeting the electric vehicle market according to this article:-

http://www.autonews.com/article/20170115/OEM05/301169952/asias-luxury-brands-charge-into-evs

Two things, competition is good for everybody but surely this must mean the EV market is here to stay?