If God increased the provision for His servants, they would transgress on earth. This is why He sends it precisely measured to whomever He wills. He is fully Cognizant and Seer of His servants.
وَلَو بَسَطَ اللَّهُ الرِّزقَ لِعِبادِهِ لَبَغَوا فِى الأَرضِ وَلٰكِن يُنَزِّلُ بِقَدَرٍ ما يَشاءُ إِنَّهُ بِعِبادِهِ خَبيرٌ بَصيرٌ
wa law basatal laahur rizqa li’ibaadihee labaghaw fil ardi wa laakiny yunazzilu biqadarim maa yashaaa’; innahoo bi’ibaadihee Khabeerun Baseer