The grammar pattern ~ばかりだ is used to express that a situation continues to move in one direction – typically getting progressively worse (or occasionally better). It conveys the sense of "keep on ~ing" or "continue to ~" and emphasizes an ongoing, one-directional trend that the speaker often views with concern or a sense of helplessness.
This pattern attaches to the dictionary form of a verb:
~ばかりだ is most common when the trend is undesirable or negative from the speaker's perspective. It carries a tone of worry, frustration, or resignation – as if the situation is only heading in a bad direction with no sign of stopping.
Be careful not to confuse ~ばかりだ (one-directional trend) with other uses of ばかり:
With ~ばかりだ, the focus is on a trend that keeps progressing, not on repetition or recency.