If one giant company stands behind Bitcoin, then others will start too.

Microsoft accepts Bitcoin - how much bigger do you want? So do Expedia, Dish Network, and Overstock. All of them have for some time now. Unfortunately, thanks to the fact that the community allowed Blockstream to co-opt Bitcoin's development, the number of companies that have stopped accepting it this year is considerably higher than the number which have started (or will start, I expect).