I agree with you — inconsistency is maybe Arsenal's biggest problem and one of the reasons why they haven’t won anything in the last five years.
The main reason why Arsenal have been ending the season in second position is just inconsistency, Arsenal are always having chances to win the league title, but their performance is always dropping. Mostly Arsenal will start the season well, and everyone will think they will be able to win the premier league title that season, but before the season ends, you going to see that Arsenal will start losing matches that they are not suppose to lose, I don’t really know why thats always happening to Arsenal, but with the new signs which they just made, let’s hope next season is going to be a different season for them.
Arsenal inconsistency as a major factor in their inability to win the premier League title despite starting the season strong, Arsenal really performan tends to off mid season leading to unexpected lossess and ultimately finishing in second position the team's strong start to the season often raises hopes of winning the title, but they fail to sustain their form. The optimistic about the potential impact of Arsenals recent signing hoping they'll bring a difference in the teams performance and help them achieve thier goal of winning the premier League title.