The Premier League has very tight competition from other teams, therefore teams are required to continue to develop much better.
currently the most competitive league is the Premier League even though man CIty has dominated in the last few seasons but that is inseparable from the strength and consistency of this team which is very good.
Next season, Manchester City will get more difficulty to protect their crown in Premier League because logically Arsenal would become stronger, same for Newcastle United. Manchester United, Chelsea can get improvement in the summer too.
Of course there is no guarantee that Manchester City will be able to maintain what they have achieved this season, because other teams will surely improve themselves even better to navigate the new season to come. On the other hand, even though Manchester City is in very prime condition this season, it is not certain that they will be able to maintain it, because the decline in the team's performance will be unpredictable, we can see from what Liverpool experienced.
Manchester City's achievements this season have been the best so far as every team wants to maintain their consistent performance and the teams that do poorly want to develop their game. Manchester City will surely want to maintain this achievement and maintain the consistent performance they have been doing, on the other hand, the teams that have produced good chances but have not achieved much success this season must find their weaknesses next season and try to strengthen themselves in those weak areas. Now it remains to be seen whether Manchester City can maintain their consistency in this intense competition.
There is no guarantee that Manchester City will be able to defend their title again next season. But you have to see that the squad that Guardiola has built this season is very strong and of course very difficult to match. We also haven't seen activity in the transfer market from other EPL teams, if indeed other teams don't add to their strength then it is certain that Manchester City will return to dominate the Premier League after successfully posting three times in a row and will likely increase again next season.
I am also sure that Guardiola will also return to adding new players to add strength to his squad. The latest information is that they have got Kovacic from Chelsea, even though the player is old, his presence will certainly have a very positive impact on the midfield. The strength of Manchester City must certainly be a challenge for other teams, so that they don't always dominate and the Premier League is not seen as a farmers' league.