Hope this is accessible outside the UK, but BBC Radio's "Business Daily" programme last week covered the topic of LED Stadium advertising in sport:
https://www.bbc.co.uk/sounds/play/w3ct6s25
Being broadcast on the BBC World Service, this covered sport worldwide eg US Ice Hockey, IPL Indian cricket and Australian soccer etc. However it also found time to speak to a company based in Dundalk which promotes this business, with a visit to the Brandywell on matchday thrown in for good measure! (Programme is only 15 mins long btw)
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