Square says its employees might get too rich

This headline is not pointing to super unusual language in these filings - look at Twitter's S-1, for example: "Our growth strategy also depends on our ability to expand and retain our organization with highly skilled personnel. Identifying, recruiting, training and integrating qualified individuals will require significant time, expense and attention. In addition to hiring new employees, we must continue to focus on retaining our best employees. Many of our employees may be able to receive significant proceeds from sales of our equity in the public markets after this offering, which may reduce their motivation to continue to work for us." http://www.sec.gov/Archives/edgar/data/1418091/0001193125133...

And Alibaba's F-1: "In addition, we have a number of employees, including many members of management, whose equity ownership in our company could give them a substantial amount of personal wealth following our initial public offering. As a result, it may be difficult for us to continue to retain and motivate these employees, and this wealth could affect their decisions about whether or not they continue to remain with us. If we are unable to motivate or retain these employees, our business may be severely disrupted and our prospects could suffer." https://www.sec.gov/Archives/edgar/data/1577552/000119312514...

Etc.