people unaware of the limit. there are already minimum boundary size limits but they are very less and old international stadiums are exempted. here are the laws about boundaries from ICC ODI playing conditions.
19.1 Determining the boundary of the field of play
19.1.1 Before the toss, the umpires shall determine the boundary of the field of play, which shall be fixed for the
duration of the match. See clause 2.3.42 (Consultation with Home Board).
19.1.2 The boundary shall be determined such that no part of any sight-screen, will, at any stage of the match, be
within the field of play.
19.1.3 The aim shall be to maximize the size of the playing area at each venue. With respect to the size of the
boundaries, no boundary shall be longer than 90 yards (82.29 meters), and no boundary should be shorter
than 65 yards (59.43 metres) from the centre of the pitch to be used.
19.1.4 At all times, there must be 3 yards (2.74 meters) from the boundary rope to the first solid object (advertising
boards/LEDs, photographers, cameramen, dug outs, covers, perimeter fence) for the player’s safety run off.
19.1.5 If the boundary is positioned less than 90 yards (82.29 meters) from the centre of the pitch, the boundary
rope cannot be set at a distance of more than 10 yards (9.14 meters) from the perimeter fence. The 10
yards shall be inclusive of the 3 yards (2.74 meters) provided for the player’s safety run off.
19.1.6 Any ground which has previously been approved to host international cricket which is unable to conform to
the minimum boundary dimension shall be exempt. In such cases the boundary shall be positioned so as to
maximize the size of the playing area