If you work for someone with $80bn of shareholder capital at risk you can take 1/10000th of the risk at work than if you have $8M of shareholder capital at risk.
That depends on what the risk is. If the risk is to the credibility or business model or relationships of the $80bn core business, then sure, the big company absolutely must be more conservative. On the other hand, if only a tiny fraction of that $80bn is needed to underwrite losses from your skunkworks' niche product taking too long to launch, lack of rapid uptake isn't an existential threat (even if the project gets canned, most of the team will still have jobs and they might even keep the profitable part of the project alive) and resources can be shared with other areas of the business, there are other risks that are easier to take.