1200 employees going on strike will literally have no negative impact on Google's bottom line, at least not unless they do it for a long time period. A lot of the money that comes in is basically automatic, it's being produced by ad sells and stuff like that. You'd need a massive subset of the company's staff to go on strike (not just 1200) before that would have any impact on whether the money-making machine continues to function. In a case like this walkouts or strikes by the tech workers have more of a symbolic purpose + impact on future deadlines/releases than a direct impact on revenue.

Maybe if the entire SRE department went on strike and stopped maintaining the datacenters that would put a dent in the numbers due to degraded service, but something like that would probably just doom the company entirely even if they went back to work after a bit.