The situation you described is not necessarily common, but it can happen in certain circumstances. It is important to carefully evaluate the terms and conditions of such an agreement before making any decisions.

Firstly, it is not uncommon for business owners to seek out "owner operators" to manage their businesses, especially if they live out of state or have other commitments. This allows them to have someone on the ground who can oversee operations and make day-to-day decisions. In many cases, these owner operators are given a certain percentage of the company as an incentive or reward for their efforts.

However, the provision where the owner can revoke the 25% ownership at his discretion is indeed unusual and potentially concerning. This provision essentially means that you would not have true ownership rights, and your efforts and contributions to the company could be undervalued or even exploited. It is important to carefully consider the implications of such a provision and whether it aligns with your long-term goals and interests.

In this situation, it is reasonable for you to have offered to buy the 25% from the owner, as it would provide you with more security and control over your role in the company. However, the owner's reaction to your offer could indicate that he may have alternative motives or concerns that are not immediately apparent.

To gain a better understanding of the situation, it is advisable to have open and honest communication with the owner. Ask for clarification on his intentions and concerns, and express your own goals and expectations. It is important to establish a mutually beneficial and fair agreement that recognizes your contributions and provides you with a reasonable level of ownership and control.

If the owner is unwilling to negotiate or address your concerns, it may be a sign that the arrangement is not in your best interest. In such cases, it may be wise to consider other opportunities or seek legal advice to protect your rights and interests.

It is always recommended to consult with a legal professional who specializes in business and contract law to review any agreements or contracts before making any significant decisions. They can provide you with specific advice and guidance based on your unique circumstances and ensure that your rights and interests are protected.

Remember, every situation is different, and what may be acceptable or common in one industry or region may not be applicable in another. Trust your instincts and carefully evaluate the terms and conditions before committing to any agreement.