We are not seeing those catastrophic effects in other proof-of-work altcoins (yet) because:

1. Does not apply to altcoins which employ proof-of-stake, such as Steem.

2. Many if not all other proof-of-work altcoins are controlled by an oligarchy of whales who makes their profits by raping the system in various sneaky ways, e.g. Dash’s and PIVX’s masternode scam snake oil marketed as being “decentralized governance” (governance can only be a corrupted power vacuum). Thus the incentives of transaction fees would be irrelevant presuming the whales maintain enough control over mining to maintain the lie of “decentralization”. The failure mode of course is when those whales are attacked (e.g. by the governments such as we see with BTE-e whale recently arrested in Greece on behalf of the USA and you can presume the Feds laid in wait to find a way to grab his private keys or can eventually use waterboarding torture to extract them). Centralized money always fails because money is inherently a decentralized free market valuation system:

   _{Money doesn't need to physically leave your clawy grasp, it will just revalue itself so as to bring whatever volume you hold in line with its correct relative value. In this perspective, inflation in the US is not something that can be avoided, and not something that's done by politicians : it's just money reacting to the problem that a lot of it is held by comparatively very lame people. In general inflation is always the companion of societies that used to be cool but aren't anymore.}

3. The research explains that such catastrophic failure should not occur until the transaction revenue is significant (or probably greater than) the revenue from the block reward.

_{P.S. I hope you will not be offended if I remark that the “do you realize” and “You do realize” seem to reflect an incorrect belief you may have about my lack of expertise (or maybe it is just your style of phrasing). I hope you know that I’ve been knee deep into researching and discussing all such issues about blockchains and cryptocurrency nonstop 24 x 7 since 2013.}