As I said, Every country takes the home advantage. Not only against teams outside of the sub-continent. Asian Batters are used to play in spin cricket and they understand the condition better than other countries. But, Still when you will see teams like India and Pakistan Struggling against Bangladesh in Bangladesh. it's not surprising. Because they playing in their own backyard and they know how the pitch will behave. England is the only team who win the ODI series in Bangladesh in the last ten years. This means All countries (Except England) lost a series against Bangladesh in Bangladesh in the last ten years Including India, Pakistan, New Zealand, South Africa, Australia and West Indies as well.
Home advantage is surely big advantage for the teams, but now it's time for them to work on their quality as well because their record in big events and away is never been ideal which is also important for all teams currently in Asia we have five test playing nations and with this all Bangladesh is surely at the bottom of list even right now Afghanistan having better results even they are not able to play at home.
Currently, India and Bangladesh are doing good for the home series, but both lost as England won in Bangladesh and Australia won in India with this we can feel how changes are happening around sporting world with this all know it's good time for having changes in their system and performance as well which will give them better intention from the top teams in near future.