Until the current fringe groups currently buying time run out of money. A topic of recent interest on SW forums is that The Overcomer Ministry (the deceased Brother Stair) has made some significant cuts to its SW output. With Ralph Stair now gone the money may no longer be flowing in.
Another consideration: Some of the people who own U.S. domestic shortwave stations are starting to get up there in age. Is there a new generation of owners willing to take on such operations? Note that WHRI has been off the air for almost two years while searching for a buyer (the FCC killed Allan Weiner's purchase attempt by not acting on it...questions about who would "really" be in control.)
TWR still has a significant shortwave presence from its operations in Eswatini (the former Swaziland) as well as Guam and various leased sites.
The only HCJB presence in Ecuador is the 1kw shortwave transmitter on 6050 kHz (broadcasting in Spanish and various indigenous languages) along with the local FM in Quito. It appears the long time AM in Quito is gone. Haven't researched whether they have local FM in other Ecuadorian cities.
HCJB Global has been renamed Reach Beyond, and its SW operation in Kununurra, Western Australia targets South and Southeast Asia in various languages. There are also broadcasts in Japanese and Korean. China is not a target.
More info on Reach Beyond Australia here:
Welcome to Reach Beyond in Australia - Reach Beyond Australia
And RBA schedules can be found here:
On Air - Reach Beyond Australia