The 70th Ashes is over(2017-18), and Australia won and regained it comprehensively.
In the last 4 series(2013 onwards) host nation have been winning The Ashes quite easily.
Recently this has been the trend for other test tournaments. There is no respite as success has eluded tourist teams when they travel overseas. The top teams have been consistently winning at home.
For instance –
India won all 7 home series since 2015
Australia have won 6 out of 7 home series since 2013-14 – lost one
South Africa won 6 out of 7 home series since 2014 – lost one
England have won 5 out of 8 home series since 2014 – lost one
New Zealand have won 5 out of 8 home series since 2014 – lost two
Below is comprehensive statistical analysis of Ashes 2017-18 played in Australia
All data updated at end of 5th SCG Test