(They're not necessarily using NetBeans, but it's an interesting article on the use of Python.)
"Python has enjoyed many years of grassroots usage and support from developers across eBay. Even before official support from management, technologists of all walks went the extra mile to reap the rewards of developing in Python. Today, Python powers over 50 projects at eBay and PayPal."
See the article at https://www.paypal-engineering.com/2014/12/10/10-myths-of-enterprise-python/