I am a Radio Amateur, i can legally transmit enormous amounts of power (when aerial gain is included it can be several kilowatt ERP) on the whole radio spectrum, and quite happily do.
this is all within the licence conditions, it is incumbent upon every electronic product available to be able to deal with that situation, which is quite obviously why all the regulations exist.
BUT as we all know there are many cheap crappy products that do not adhere to these specifications, thats obviously why they are cheap.
if the products you own are not able to deal with the radio power of some external influence, such as a radio amateur or a commercial user, you are going to get these issues.
in 40 years of operation as a radio amateur i have had loads of fun with local authorities, governmental agencies, commercial radio operators etc who have all complained and tried to prosecute me for operating entirely within the framework of my highly regarded qualification.
never has a single one of those objections been upheld nor gone beyond an initial hearing.
as to your problem and its description of the timeout period, it reminds me of issues that were suffered by my neighbours with similar wifi over mains power units when i wrote some software to destroy their wifi over power systems due to them blanking the normal radio spectrum with cheap and illegal ethernet over power adaptors.
these wifi over mains system are totally destructive to the radio spectrum they should not be employed in any circumstance.
i no longer have any interference from these products as the users found a sensible way to connect.
i also sell a product to that does exactly what you explain, it knocks out over power ethernet transmitters which normally hang up for 15-30 minutes because they think they are getting hacked, it does not take long for the owners to remove them.
the fact that 2.4GHz is unregulated has allowed a great amount of internet expansion, but there is also a great deal of abuse of that spectrum point.
perhaps consider other people in your choice of internet connection or at least investigate the information enclosed if you are slightly interested.