I don't think that is ever a good idea. But Google does also have a reputation for getting things wrong. Plenty of their product never make it anywhere, because they don't have to. You have been able to get a cheap Windows laptop for probably almost ten years. Recently e.g. the Lenovo IdeaPad and before that there were netbooks. I think there could be merit to ChromeOS, but for now it seems like a placeholder so no one else can take that position in the market.