The Nomad and Activator weren't disasters..that's a myth concocted by idiot fanboys who don't know anything. Nomad doesn't cost them anything much like the Mega combination because its using old tech.
All hardware cost money not only in terms of R&D but also then in terms of manufacturing and PR, also just because systems like the Nomad was using established tech does not mean it's cheap has you can't use the old assembly lines and have to come out with new ones to manufacture and shrink the tech to fit in the handheld, then you issues over the LCD screen and then the testing that will be needed to be done to check the new board can work in the handheld casing and so on . The Multi Mega was a stunning bit of kit and a great bit of R&D to fit it all into one neat package but it sold like utter crap
What is true to say is that the likes of Super Snes CD, N64 DD, Multi Mega, Saturn, FX Chip, Virtual Boy and so on never really affected SEGA or Nintendo profits in their hey day , but one has to question were some of the R&D products worth spending the money on and if that money would have been better spent on other products or more games
The SNES didn't get its investment back straght away..factor in mode 7..THE colr palette etc...factor in FX cHIP..factor in its failed Nintendo
Looking over the complete dominance of the Famicom and NES in Japan and the USA (where is 1 in every 4 USA homes had one or something silly like that) The Super Famicom was a complete sell out on it's launch in Japan and always sold at either cost price (to be fair SEGA did that with the MD too) . It took until the DC for SEGA to start selling systems at a loss or with Nintendo the Wii U.
In 1991/2 Nintendo made profits of over a $Billion , SEGA has never been able to post a set of results like that, to put in to context . When SEGA was set for a merger with Bandai the whole SEGA Group was valued at $1.5 billion to $2 billion and it was more or less the same value when CSK and the late great Isao Okawa-san were looking to sell their entire stake to Microsoft .
Are you Nintendo by anychance?
LOL. Are you typing in the school yard, because that's the type of response I would expect from the school yard . What next ? If one points out that Man Utd are the most biggest and most successful football club in the UK in modern times, that makes you a Man Utd fan ? . Point out the simple truths does not make you a fan