AxiomAlpha.com looks at buying stadium naming rights and concludes it’s not a good deal for the purchasers:

Of the 10 companies we just analyzed, 9 underperformed a basic portfolio consisting of a 50/50 split allocation between their industry peers (represented as a sector ETF where one existed and by an equal weight index of direct competitors where one did not) and the S&P 500. Six of the companies underperformed the S&P 500 by more than 50%. Furthermore, if we adjust our analysis to only look at banks after they received financial assistance from the government, all 10 companies underperformed. That’s compelling, but not quite statistically significant.

AxiomAlpha.com

I would be very happy to see stadiums go back to being named after teams or famous people, more durable names.