They have to do it now and be ahead to other companies or else they will just be left behind. Facebook have started to realize it, they are now working with their own coins. Its good to have more tech companies, or any businesses to accept cryptocurrency this is a real start now and hope for more.
Big companies are starting to consider cryptocurrency and blockchain tech. Last time I read starbucks accepting crypto, as time goes by more and more companies and financial institutions will follow. I think the trend of blockchain tech and crypto in businesses will have a chain effect, and soon the market demand for crypto will grow.
I think the big companies now have realized the good in bitcoin that is why they are considering it now. With this, a lot of people will invest in bitcoin thus it will increase the demand of bitcoin, however other big companies like Facebook have disclose their plan of launching their own on Globalcoin by 2020. With bitcoin gaining popularity, other companies are also doing something to either replicate or replace bitcoin. I just hope bitcoin will continue its upward trend and stay at the top regardless of whatever coin may arise.