Here's my take... It's not a moral decision, it's a financing decision. Larry and Sergey (and their initial backers) made a decision to put this structure in place. Everyone is free to decide to invest or not invest in it. Conventional theory suggests that investors don't like these types of arrangements, and these provisions weigh down the price of the stock. Therefore, the original owners had to accept a smaller valuation based on this.
This isn't a morality thing, it means that the Class A common stock holder are more like bondholders (who put in money without votes) with upside, rather than full owners. But all of them were well informed about this when they put the money in.
This is not to say that we should all invest in Class A shares, just that this structure is one way of many to invest in a company, and people who don't like it can put their money elsewhere.