Say there are two different people playing the lottery. Every day they buy a number of tickets. Person A buys tickets in a pool along with someone else. Person B buys tickets on their own. Thus, if Person A wins the lottery they'll have to split their winnings, whereas Person B gets to keep it all.
OK, so who ends up being better off? The answer to that is entirely decoupled from their share of the lottery winnings, what matters is entirely whether or not they won the lottery. In terms of VC financing, the RoI from "winning the lottery" by hitching your horse to a small company that grows until a multi-billion dollar enterprise in a few years is going to dwarf any other aspect of investing and returns. Thus it's vastly more important to ensure that you are doing everything possible to maximize "winning the lottery" rather than trying to maximize the share of the prize you'll get. 2x or 3x may seem like a lot, but it's nothing compared to the 100x, 1000x, or 10000x that you'll get from being on the ground floor of the next big thing.
For example, Horace Rackham was an early investor in Ford and he received a 1300x RoI, Peter Thiel received a 3000x RoI on his investment in Facebook, while Kleiner and Sequoia capital each turned $12.5 million into $2 billion through their investments in google.